Twin cities

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File:Cedar-Riverside and Saint Paul skyline seen from the Foshay Tower observation deck, May 2018.jpg
High-rise buildings in Minneapolis's Cedar-Riverside neighborhood, with the Downtown Saint Paul skyline visible in the background ten miles away. Minneapolis' city limits border those of Saint Paul, the capital of Minnesota. This gave birth to the nickname of the region, the "Twin Cities" metropolitan area.
File:View from Suensaari water tower Tornio 20150806 04.JPG
A view of the town of Tornio (Finland), which forms a twin city with Haparanda (Sweden)

Twin cities are two neighboring cities or urban areas that are generally comparable in status and size, though not necessarily equal.[1][2] Although there are no formal criteria, a city and a substantially smaller suburb would not typically qualify, even if they were once separate. Tri-cities and quad cities are similar groups of three or four municipalities, respectively.

A common but not universal scenario is two cities that developed concurrently on opposite sides of a river. For example, Minneapolis and Saint Paul in Minnesota—one of the most widely known pairs of "Twin Cities"—were founded several miles apart on opposite sides of the Mississippi River, and competed for prominence as they grew.

In some cases, twin cities are separated by a state border, such as Albury (New South Wales) and Wodonga (Victoria) in Australia, on opposite sides of the Murray River. In Pakistan, Islamabad and Rawalpindi are twin cities located in the northwestern Punjab region; Islamabad is administratively part of the Islamabad Capital Territory, and Rawalpindi is in the province of Punjab. Cities on opposite sides of international borders sometimes share enough cultural and historical identity to be seen as twins, such as Haparanda (Sweden) and Tornio (Finland), Leticia (Colombia) and Tabatinga (Brazil), or Valga (Estonia) and Valka (Latvia).

In some cases, twin cities eventually merge into a single legal municipality, such as Buda and Pest merging in 1873 into Budapest, Hungary[3]; Brooklyn and New York City being consolidated in 1898; and the three ancient cities of Hankou, Hanyang, and Wuchang joining in 1927 into Wuhan. As a single urban area, twin cities may share an airport whose airport codes include both cities' initials, e.g. DFW (Dallas–Fort Worth), LBA (LeedsBradford), MSP (Minneapolis–Saint Paul), RDU (Raleigh and Durham), and CAK (AkronCanton).

Twin cities

File:Obelisco - Plaza Internacional - Frontera de la Paz - Livramento - Rivera.jpeg
Cross-border example of twin cities: Plaza Internacional of the Frontera de la Paz. On the left, Santana do Livramento (Brazil); on the right, Rivera (Uruguay).

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List of international and regional border towns and cities

Africa

Border towns Countries
Kinshasa and Brazzaville File:Flag of the Democratic Republic of the Congo.svg Democratic Republic of the Congo / File:Flag of the Republic of the Congo.svg Republic of the Congo
Goma and Gisenyi File:Flag of the Democratic Republic of the Congo.svg Democratic Republic of the Congo / File:Flag of Rwanda.svg Rwanda
Kousséri and N'Djamena File:Flag of Cameroon.svg Cameroon / File:Flag of Chad.svg Chad
Aflao and Lomé File:Flag of Ghana.svg Ghana / File:Flag of Togo (3-2).svg Togo
Victoria Falls and Livingstone File:Flag of Zimbabwe.svg Zimbabwe / File:Flag of Zambia.svg Zambia

Asia

Border towns Countries
Astara and Astara File:Flag of Azerbaijan.svg Azerbaijan / File:Flag of Iran.svg Iran
Erenhot and Zamyn-Üüd File:Flag of the People's Republic of China.svg China / File:Flag of Mongolia.svg Mongolia
Dandong and Sinuiju File:Flag of the People's Republic of China.svg China / File:Flag of North Korea.svg North Korea
Changbai and Hyesan
Ji'an and Manpo
Manzhouli and Zabaykalsk File:Flag of the People's Republic of China.svg China / File:Flag of Russia.svg Russia
Heihe and Blagoveshchensk
Dongxing and Mong Cai File:Flag of the People's Republic of China.svg China / File:Flag of Vietnam.svg Vietnam
Hekou and Lao Cai
Johor Bahru and Singapore[4] File:Flag of Malaysia.svg Malaysia / File:Flag of Singapore.svg Singapore
Vientiane and Nong Khai File:Flag of Thailand.svg Thailand / File:Flag of Laos.svg Laos
Dansavan and Lao Bao File:Flag of Laos.svg Laos / File:Flag of Vietnam.svg Vietnam
Al Ain and Al Buraimi File:Flag of the United Arab Emirates.svg United Arab Emirates / File:Flag of Oman.svg Oman
Agartala and Akhaura File:Flag of India.svg India / File:Flag of Bangladesh.svg Bangladesh
Eilat and Aqaba File:Flag of Israel.svg Israel / File:Flag of Jordan.svg Jordan
Jincheng and Xiamen File:Flag of the Republic of China.svg Taiwan / File:Flag of the People's Republic of China.svg China
Hong Kong and Shenzhen[5] File:Flag of Hong Kong.svg Hong Kong / File:Flag of the People's Republic of China.svg China

Europe

Border towns Countries
Vienna and Bratislava[Europe 1] File:Flag of Austria.svg Austria / File:Flag of Slovakia.svg Slovakia
Bad Radkersburg and Gornja Radgona File:Flag of Austria.svg Austria / File:Flag of Slovenia.svg Slovenia
Comines and Comines File:Flag of France.svg France / File:Flag of Belgium (civil).svg Belgium
Mouscron and Tourcoing
Wervik and Wervicq-Sud
Slavonski Brod and Bosanski Brod File:Flag of Croatia.svg Croatia / File:Flag of Bosnia and Herzegovina.svg Bosnia and Herzegovina
Český Těšín and Cieszyn File:Flag of the Czech Republic.svg Czech Republic / File:Flag of Poland.svg Poland
Copenhagen and Malmö File:Flag of Denmark.svg Denmark / File:Flag of Sweden.svg Sweden
Helsingør and Helsingborg
Valga and Valka File:Flag of Estonia.svg Estonia / File:Flag of Latvia.svg Latvia
Narva and Ivangorod File:Flag of Estonia.svg Estonia / File:Flag of Russia.svg Russia
Imatra and Svetogorsk File:Flag of Finland.svg Finland / File:Flag of Russia.svg Russia
Tornio and Haparanda File:Flag of Finland.svg Finland / File:Flag of Sweden.svg Sweden
Strasbourg and Kehl File:Flag of France.svg France / File:Flag of Germany.svg Germany
Hendaye and Irun File:Flag of Spain.svg Spain / File:Flag of France.svg France
Frankfurt (Oder) and Słubice File:Flag of Poland.svg Poland / File:Flag of Germany.svg Germany
Görlitz and Zgorzelec
Guben and Gubin
Heringsdorf and Świnoujście
Konstanz and Kreuzlingen File:Flag of Switzerland (Pantone).svg  Switzerland / File:Flag of Germany.svg Germany
Laufenburg (Baden) and Laufenburg, Aargau[Europe 2]
Esztergom and Štúrovo File:Flag of Hungary.svg Hungary / File:Flag of Slovakia.svg Slovakia
Komárno and Komárom
Strabane and Lifford File:Flag of Ireland.svg Ireland / File:Flag of the United Kingdom.svg United Kingdom
Gorizia and Nova Gorica File:Flag of Italy.svg Italy / File:Flag of Slovenia.svg Slovenia
Kerkrade and Herzogenrath File:Flag of the Netherlands.svg Netherlands / File:Flag of Germany.svg Germany
La Línea de la Concepción and Gibraltar File:Flag of Spain.svg Spain / File:Flag of the United Kingdom.svg United Kingdom
Basel, Weil am Rhein and Saint Louis File:Flag of Switzerland (Pantone).svg  Switzerland / File:Flag of Germany.svg Germany / File:Flag of France.svg France
Sarp and Sarpi File:Flag of Turkey.svg Turkey / Template:Country data Georgia}
Tui and Valença File:Flag of Spain.svg Spain / File:Flag of Portugal.svg Portugal
Aubange, Longwy and Pétange File:Flag of Belgium (civil).svg Belgium / File:Flag of France.svg France / File:Flag of Luxembourg.svg Luxembourg
Notes

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  1. This is an example of capital cities of neighboring nations being twin cities of one another.
  2. Separated by the Rhine River (used to be one city until 1801/1802).

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North America

Border towns Bordering countries
Niagara Falls, Ontario and Niagara Falls, New York File:Flag of the United States.svg United States / File:Flag of Canada (Pantone).svg Canada
Sault Ste. Marie, Ontario and Sault Ste. Marie, Michigan
Stanstead, Quebec and Derby Line, Vermont
North Portal, Saskatchewan and Portal, North Dakota
Tecate, Baja California and Tecate, California File:Flag of the United States.svg United States / File:Flag of Mexico.svg Mexico
Boquillas del Carmen, Coahuila and Boquillas, Texas
Naco, Sonora and Naco, Arizona
Nogales, Sonora and Nogales, Arizona
San Luis Río Colorado, Sonora and San Luis, Arizona
Nuevo Laredo, Tamaulipas and Laredo, Texas
Nuevo Progreso, Río Bravo, Tamaulipas and Progreso, Texas
Calexico, California and Mexicali, Baja California (Calexico–Mexicali)
Ciudad Hidalgo, Chiapas and Ayutla, San Marcos File:Flag of Mexico.svg Mexico / File:Flag of Guatemala.svg Guatemala
Detroit, Michigan and Windsor, Ontario (Detroit–Windsor) File:Flag of the United States.svg United States / File:Flag of Canada (Pantone).svg Canada
International Falls, Minnesota and Fort Frances, Ontario
Douglas, Arizona and Agua Prieta, Sonora File:Flag of the United States.svg United States / File:Flag of Mexico.svg Mexico
Yuma, Arizona and San Luis Río Colorado, Sonora
San Diego, California and Tijuana, Baja California see San Diego–Tijuana
Brownsville, Texas and Matamoros, Tamaulipas see Brownsville–Matamoros
Del Rio, Texas and Ciudad Acuña, Coahuila
Eagle Pass, Texas and Piedras Negras, Coahuila
El Paso, Texas and Ciudad Juárez, Chihuahua see El Paso–Juárez
Presidio, Texas and Manuel Ojinaga, Chihuahua

South America

Border town Countries
Sant'Ana do Livramento and Rivera File:Flag of Brazil.svg Brazil / File:Flag of Uruguay.svg Uruguay
Chuí and Chuy File:Flag of Brazil.svg Brazil / File:Flag of Uruguay.svg Uruguay
Puerto Iguazú, Foz do Iguaçu, Ciudad del Este, and Presidente Franco File:Flag of Argentina.svg Argentina / File:Flag of Brazil.svg Brazil / File:Flag of Paraguay.svg Paraguay
Posadas and Encarnación File:Flag of Argentina.svg Argentina / File:Flag of Paraguay.svg Paraguay
Concordia and Salto File:Flag of Argentina.svg Argentina / File:Flag of Uruguay.svg Uruguay
Salvador Mazza and Yacuiba File:Flag of Argentina.svg Argentina / File:Flag of Bolivia.svg Bolivia

List of internal border towns and cities

Africa

Twin towns Country
Cairo and Giza.[6] Triple cities if counting Shubra El Kheima. File:Flag of Egypt.svg Egypt
Port Said and Port Fuad
Sekondi-Takoradi File:Flag of Ghana.svg Ghana
Asaba and Onitsha File:Flag of Nigeria.svg Nigeria
Jimeta and Yola
Johannesburg and Pretoria, Gauteng Province File:Flag of South Africa.svg South Africa

Asia

Twin towns Country
Dhaka and Narayanganj File:Flag of Bangladesh.svg Bangladesh
Guangzhou and Foshan File:Flag of the People's Republic of China.svg China
Xi'an and Xianyang
Beijing and Langfang
Wuxi and Suzhou
Chaozhou and Shantou
Haifeng and Lufeng
Ahmedabad and Gandhinagar, Gujarat[7] File:Flag of India.svg India
Allahabad and Naini, Uttar Pradesh[7]
Bangalore, Karnataka and Hosur, Tamil Nadu
Bishangarh and Jalore, Rajasthan
Chümoukedima and Dimapur, Nagaland
Cuttack and Bhubaneswar, Odisha[8]
Durg and Bhilai, Chhattisgarh[8]
Hubli and Dharwad, Karnataka[8]
Mysore and Srirangapatna, Karnataka
Kankroli and Rajsamand, Rajasthan[8]
Kochi and Ernakulam, Kerala[8][9]
Kolkata and Howrah, West Bengal[8]
Mumbai and Navi Mumbai, Maharashtra[8]
Kalyan and Dombivli, Maharashtra[7]
Mira and Bhayandar, Maharashtra[8]
Vasai and Virar, Maharashtra[8]
Ambarnath and Badlapur, Maharashtra[8]
Pimpri and Chinchwad, Maharashtra[8]
Sangli and Miraj, Maharashtra
Munger and Jamalpur, Bihar[8]
Noida and Greater Noida, Uttar Pradesh[8]
Pondicherry and Cuddalore
Ranchi and Hatia, Jharkhand[8]
Surat and Navsari, Gujarat
Sumerpur and Sheoganj, Rajasthan
Thrissur and Guruvayur, Kerala[8]
Vijayawada and Guntur, Andhra Pradesh[8]
Bangarpet and Kolar Gold Fields, Karnataka
Harihar and Davangere, Karnataka
Shivamoga and Bhadravati, Karnataka
Tiruchirappalli and Srirangam, Tamil Nadu
Tirunelveli and Palayamkottai, Tamil Nadu[8]
Marthandam and Kuzhithurai, Tamil Nadu
Hyderabad and Secunderabad, Telangana
Warangal and Hanamkonda, Telangana
Asansol and Durgapur, West Bengal
Barrackpore and Barasat, West Bengal
Coochbehar and Alipurduar, West Bengal
Jalpaiguri and Mainaguri, West Bengal
Siliguri and Jalpaiguri, West Bengal
Berhampore and Murshidabad, West Bengal
Erbil and Mosul File:Flag of Iraq.svg Iraq
Seleucia and CtesiphonTemplate:Refn
Ramla and Lod File:Flag of Israel.svg Israel
Tel Aviv and JaffaTemplate:Refn
Aomori and Hakodate File:Flag of Japan.svg Japan
Kamisu and KashimaTemplate:Refn
Kitakyushu and Shimonoseki
Kyoto and Otsu
Maebashi and Takasaki
Nasushiobara and OtawaraTemplate:Refn
Okayama and KurashikiTemplate:Refn
Osaka and SakaiTemplate:Refn
Sanjo and Tsubame
Toyohashi and Toyokawa
Tsukuba and TsuchiuraTemplate:Refn
Yokkaichi and Suzuka
Karagandy and Temirtau File:Flag of Kazakhstan.svg Kazakhstan
Beirut and Jounieh, Lebanon File:Flag of Lebanon.svg Lebanon
Kuala Lumpur and Putrajaya, File:Flag of Malaysia.svg Malaysia
Bharatpur and Gaindakot File:Flag of Nepal.svg   Nepal
Butwal and Tilottama
Nepalgunj and Kohalpur
Rason and Chongjin File:Flag of North Korea.svg North Korea
Jhelum and Sarai Alamgir File:Flag of Pakistan.svg Pakistan
Peshawar and Mardan
Rawalpindi and Islamabad
Ramallah and al-Bireh File:Flag of Palestine.svg Palestine
Baguio and La Trinidad File:Flag of the Philippines.svg Philippines
Bantay and Vigan
Bayombong and Solano
Dagupan and Lingayen
Daraga and Legazpi
Dipolog and Dapitan
Laoag and San Nicolas
Lemery and Taal
Palo and Tacloban
Santo Tomas and Batangas
Dammam and Khobar File:Flag of Saudi Arabia.svg Saudi Arabia
Seoul and Incheon, South Korea File:Flag of South Korea.svg South Korea
Busan and Ulsan, South Korea
Sejong City and Daejeon, South Korea
Yangyang and Sokcho, South Korea
Taipei and New Taipei, Taiwan File:Flag of the Republic of China.svg Taiwan
Kaohsiung and Tainan, Taiwan
Zhubei and Hsinchu, Taiwan
Bangkok and Nonthaburi, Thailand File:Flag of Thailand.svg Thailand
Chiang Mai and Lamphun, Thailand
Songkhla and Hatyai, Thailand
Ho Chi Minh City and Binh Duong File:Flag of Vietnam.svg Vietnam
Phan Rang-Tháp Chàm
Historic
Twin towns Country
Victoria and Kowloon, colonial Hong Kong—although, in both colonial Hong Kong and the Hong Kong Special Administrative Region, Victoria is the only city recognised by law; they were widely considered to be separate cities until at least the mid-1970s.[10] Template:Country data British Hong Kong
Wuhan (merger of Wuchang, Hankou, Hanyang) File:Flag of the People's Republic of China.svg China
Chirala-Perala File:Flag of India.svg India
Bangalore Cantonment and Bengaluru Pete along with their suburbs merged to form modern Bangalore
Fukuoka (merger of east side of Naka river, Hakata, and the west side, Fukuoka) File:Flag of Japan.svg Japan
Ise (merger of Uji, Yamada)
Joetsu (merger of Takada, Naoetsu)
Naha and Shuri, Okinawa, once separate cities. Shuri became integrated as a district of Naha.
Iloilo and Jaro, once separate cities, were consolidated into Iloilo City. File:Flag of the Philippines.svg Philippines
Zhongli and Taoyuan, merged into Taoyuan City. File:Flag of the Republic of China.svg Taiwan
Saigon and Cholon, merged into Saigon-Cholon, now Ho Chi Minh City. File:Flag of South Vietnam.svg South Vietnam

Europe

Twin towns Country
Nørresundby and Aalborg File:Flag of Denmark.svg Denmark
Kotka and Hamina File:Flag of Finland.svg Finland
Frejus and Saint-Raphaël File:Flag of France.svg France
Lyon and Villeurbanne
Göteborg and Mölndal File:Flag of Sweden.svg Sweden
Düsseldorf and Neuss File:Flag of Germany.svg Germany
Frankfurt and Offenbach
Ludwigshafen and Mannheim
Mainz and Wiesbaden
Mönchengladbach and Rheydt
Nuremberg and Fuerth
Sindelfingen and Böblingen
Ulm and Neu-Ulm
Villingen-Schwenningen
Ballybofey and Stranorlar, in County Donegal, Ireland are often called the Twin Towns and form the built up area of Ballybofey and Stranorlar File:Flag of Ireland.svg Ireland
Fredrikstad and Sarpsborg File:Flag of Norway.svg Norway
Porsgrunn and Skien. Together with Tollnes, Gulset and Åfoss they form the Grenland urban area.
Sandnes and Stavanger
Bydgoszcz and Toruń File:Flag of Poland.svg Poland
Kalisz and Ostrów Wielkopolski
Porto and Vila Nova de Gaia File:Flag of Portugal.svg Portugal
Póvoa de Varzim and Vila do Conde
Alcobendas and San Sebastián de los Reyes File:Flag of Spain.svg Spain
Aldaia and Alaquàs
Coslada and San Fernando de Henares
Elda and Petrer
Llombai and Catadau
Santa Cruz de Tenerife and San Cristóbal de la Laguna
Ferrol and Narón
Jönköping and Huskvarna File:Flag of Sweden.svg Sweden
Donetsk and Makiivka File:Flag of Ukraine.svg Ukraine
Kramatorsk and Sloviansk
Sievierodonetsk and Lysychansk
Pokrovsk and Myrnohrad
Brighton and Hove File:Flag of the United Kingdom.svg United Kingdom
Chatham and Rochester[11]
Leeds and Bradford
Manchester and Salford
Newcastle upon Tyne and Gateshead
Liverpool and Birkenhead
Warwick and Leamington Spa
Historic
Twin towns Country
Knokke and Heist-aan-Zee. United into Knokke-Heist File:Flag of Belgium (civil).svg Belgium
Frýdek and Místek. United into Frýdek-Místek File:Flag of the Czech Republic.svg Czech Republic
Barmen and Elberfeld. United into Wuppertal. File:Flag of Germany.svg Germany
Bonn and Beuel. United into Bonn.
Kouvola and Kuusankoski. United into Kouvola. File:Flag of Finland.svg Finland
Äänekoski and Suolahti. United into Äänekoski.
West Berlin, West Germany and East Berlin. United into Berlin. File:Flag of East Germany.svg East Germany
Buda and Pest. United into Budapest.[3] File:Flag of Hungary.svg Hungary
Bielsko and Biała. United into Bielsko-Biała. File:Flag of Poland.svg Poland
Skanör and Falsterbo. United into Skanör med Falsterbo. File:Flag of Sweden.svg Sweden
City of London and City of Westminster. Absorbed into London. File:Flag of the United Kingdom.svg United Kingdom
Berwick-upon-Tweed and Tweedmouth, until the former was taken by England from Scotland.

North America

Twin towns Country
Halifax and Dartmouth, Nova ScotiaTemplate:Refn File:Flag of Canada (Pantone).svg Canada
Kitchener and Waterloo, Ontario
Battleford and North Battleford, Saskatchewan "The Battlefords"Template:Refn
Toronto and Mississauga, Ontario
Ottawa, Ontario and Gatineau, Quebec
Phenix City, Alabama and Columbus, Georgia File:Flag of the United States.svg United States
Lookout Mountain, Georgia and Lookout Mountain, Tennessee
Texarkana, Arkansas and Texarkana, TexasTemplate:Refn
San Bernardino and Riverside, California
Fort Collins and Loveland, Colorado
Hartford and New Britain, Connecticut
Fort Myers and Cape Coral, Florida
Fort Lauderdale and Miami, Florida
St. Petersburg and Tampa, FloridaTemplate:Refn
Augusta, Georgia and North Augusta, South Carolina
Boulder and Longmont, Colorado
Champaign and Urbana, IllinoisTemplate:Refn
Bloomington and Normal, Illinois
Lafayette and West Lafayette, Indiana
South Bend and Mishawaka, Indiana
Waterloo and Cedar Falls, Iowa
Bangor and Brewer, Maine
Lewiston and Auburn, MaineTemplate:Refn
Benton Harbor and St. Joseph, Michigan
Montague and Whitehall, Michigan
Houghton and Hancock, Michigan
Otsego and Plainwell, Michigan
Duluth, Minnesota, and Superior, WisconsinTemplate:Refn
Minneapolis and Saint Paul, MinnesotaTemplate:Refn
Natchez, Mississippi and Vidalia, LouisianaTemplate:Refn
Crystal City and Festus, Missouri
New York, New York and Jersey City, New Jersey
Raleigh and Durham, North Carolina
Winston-Salem and Greensboro, North Carolina
Piscataway and New Brunswick, New Jersey
Fargo, North Dakota, and Moorhead, MinnesotaTemplate:Refn
Grand Forks, North Dakota and East Grand Forks, Minnesota
Cincinnati, Ohio and Covington, Kentucky
Portland, Oregon and Vancouver, Washington
Delmar, Maryland and Delmar, Delaware
Scranton and Wilkes-Barre, PennsylvaniaTemplate:Refn
Allentown and Bethlehem, Pennsylvania
Greenville and Spartanburg, South CarolinaTemplate:Refn
Bristol, Tennessee and Bristol, Virginia
Memphis, Tennessee and West Memphis, Arkansas
Dallas and Fort Worth, TexasTemplate:Refn
Midland and Odessa, TexasTemplate:Refn
Bluefield, Virginia and Bluefield, West Virginia
Neenah and Menasha, Wisconsin
Marinette, Wisconsin, and Menominee, Michigan
Seattle and Tacoma, Washington
Wahpeton, North Dakota and Breckenridge, Minnesota
Christiansted and Frederiksted, United States Virgin IslandsTemplate:Refn File:Flag of the United States Virgin Islands.svg United States Virgin Islands
Historic
Twin city Country
Lloydminster, Alberta/Saskatchewan File:Flag of Canada (Pantone).svg Canada
Thunder Bay, OntarioTemplate:Refn
Saginaw and East Saginaw, MichiganTemplate:Refn File:Flag of the United States.svg United States
Stanwood and East Stanwood, WashingtonTemplate:Refn File:Flag of the United States.svg United States
Brooklyn and New York City, New YorkTemplate:Refn File:Flag of the United States.svg United States

South America

Twin cities Country
Carmen de Patagones and Viedma File:Flag of Argentina.svg Argentina
Paraná and Santa Fe
Corrientes and Resistencia
Americana and Santa Bárbara d'Oeste File:Flag of Brazil.svg Brazil
Juazeiro and Petrolina
Olinda and Recife
Vila Velha and Vitória
Ponta Porã and Mato Grosso do Sul
Concepción and Talcahuano File:Flag of Chile.svg Chile
Coquimbo and La Serena
Valparaíso and Viña del Mar
Pedro Juan Caballero and Amambay File:Flag of Paraguay.svg Paraguay
Callao and Lima File:Flag of Peru.svg Peru
Acarigua and Araure File:Flag of Venezuela.svg Venezuela
Guarenas and Guatire

Oceania

Twin city Country
Albury and Wodonga File:Flag of Australia (converted).svg Australia
Canberra and Queanbeyan
Darwin and Palmerston
Echuca and Moama
Forster and Tuncurry
Gold Coast and Tweed Heads
Harden and Murrumburrah
Kalgoorlie and Boulder
Perth and Fremantle
Townsville and Thuringowa
Napier and Hastings File:Flag of New Zealand.svg New Zealand
Lower Hutt and Upper Hutt

Tri-cities

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Border towns Bordering countries
Brisbane; Gold Coast; and Sunshine Coast, Queensland— see South East Queensland File:Flag of Australia (converted).svg Australia
Sydney; Wollongong; and Newcastle, in the geological region known as the Sydney Basin
The Tri-cities of British Columbia consist of Coquitlam, Port Coquitlam, and Port Moody File:Flag of Canada (Pantone).svg Canada
The Tri-citites of Kitchener; Waterloo; and Cambridge, Ontario, the cities' collective metropolitan area is often called the K-W Tri-City Area
Tri-Town, Ontario- Cobalt, Haileybury and New Liskeard
Xiamen, Quanzhou, Zhangzhou, Fujian File:Flag of the People's Republic of China.svg China
Wuppertal, Remscheid, Solingen, Rhineland, originally a quad-city until 1929, when Elberfeld and Barmen merged to form Wuppertal File:Flag of Germany.svg Germany
Chandigarh; Mohali; and Panchkula[12] File:Flag of India.svg India
Vijayawada; Amaravati; and Guntur
Chennai, Avadi and Tambaram
Ranipet, Walajapet and Arcot
Warangal; Hanamkonda; Kazipet — see Warangal Tri-City
Kyoto; Osaka; Kobe - see Keihanshin File:Flag of Japan.svg Japan
Parit Buntar, Perak; Nibong Tebal, Penang; and Bandar Baharu, Kedah File:Flag of Malaysia.svg Malaysia
Guadalajara; Tlaquepaque; Zapopan, Jalisco File:Flag of Mexico.svg Mexico
Bhaktapur; Kathmandu; and Patan File:Flag of Nepal.svg   Nepal
Tricity, consisting of the cities of Baglung, Beni and Kushma
Bacolod; Silay; Talisay File:Flag of the Philippines.svg Philippines
Cebu City; Mandaue; and Lapu-Lapu City
Angeles City; Mabalacat; and San Fernando
Gdańsk; Gdynia; and Sopot — see Tricity File:Flag of Poland.svg Poland
Wejherowo; Rumia; and Reda — see Kashubian Tricity
The Dammam metropolitan area, consisting of Dammam; Dhahran; and Khobar File:Flag of Saudi Arabia.svg Saudi Arabia
The metropolitan municipalities of Johannesburg, Tshwane (Pretoria) and Ekurhuleni (East Rand), Gauteng Province File:Flag of South Africa.svg South Africa
Gqeberha (Port Elizabeth), Kariega (Uitenhage) and Despatch in Nelson Mandela Bay Metropolitan Municipality, Eastern Cape Province
East London, Bhisho and Qonce (King William's Town) in Buffalo City Metropolitan Municipality, Eastern Cape Province
Khartoum; North Khartoum; and Omdurman File:Flag of Sudan.svg Sudan
Stockholm; Solna; and Sundbyberg File:Flag of Sweden.svg Sweden
Trollhättan; Uddevalla; and Vänersborg
The Dubai-Sharjah-Ajman metropolitan area, consisting of Dubai; Sharjah; and Ajman, United Arab Emirates File:Flag of the United Arab Emirates.svg United Arab Emirates
Burbank; Glendale; and Pasadena, in Los Angeles County, California File:Flag of the United States.svg United States
Fremont; Newark; and Union City, in Alameda County, California
Oceanside; Vista; and Carlsbad, in San Diego County, California
Riverside; San Bernardino; and Ontario, California, the cities' collective metropolitan area is often called the Inland Empire
San Jose; San Francisco; and Oakland, CaliforniaTemplate:Refn
College Park; East Point; and Hapeville, Georgia, all of which are near Hartsfield–Jackson Atlanta International Airport
Bay City; Saginaw; and Midland, Michigan, the cities' collective metropolitan area is often called the Greater Tri Cities, the Great Lakes Bay Region or the MBS region
Ferrysburg; Grand Haven; and Spring Lake, Michigan
Iron River, Caspian, and Gaastra, Michigan
Ironwood; Bessemer; and Wakefield, Michigan
Grand Island; Kearney; and Hastings, in south-central Nebraska, also known as Tri-Cities, Nebraska
Rochester; Dover; and Somersworth, New Hampshire
Farmington; Bloomfield; and Aztec, New Mexico
Albany, Troy, and Schenectady, New York, in the region known as the Capital District
Binghamton; Endicott; and Johnson City, New York, the cities' collective metropolitan area is often called the Triple Cities
New York, New York; Newark; and Jersey City, New Jersey
Greensboro; Winston-Salem; and High Point, North Carolina, the cities' collective metropolitan area is often called the Piedmont Triad
Raleigh; Durham; and Chapel Hill, North Carolina, the cities' collective metropolitan area is often called the Research Triangle
Tuttle; Newcastle; and Blanchard, Oklahoma, also known as the Tri-City Area
Johnson City; Kingsport; and Bristol, Tennessee/Bristol, Virginia, also known as Tri-Cities, Tennessee
Beaumont; Port Arthur; and Orange, Texas, also known as the Golden Triangle (Texas)
Dallas; Fort Worth; and Arlington, Texas
Petersburg; Colonial Heights; and Hopewell, Virginia, also known as Tri-Cities, Virginia
Pasco; Richland; and Kennewick, Washington, also known as Tri-Cities, Washington
Washington, D.C., Alexandria, Virginia, and Arlington County, Virginia

Quad cities

Border towns Bordering countries
Xinhui, Taishan, Kaiping, and Enping together formed Siyi area in Jiangmen, Guangdong File:Flag of the People's Republic of China.svg China
Helsinki, Espoo, Kauniainen and Vantaa in Uusimaa; together form the largest metropolis in the country and its actual capital area. File:Flag of Finland.svg Finland
Pattaya–Chonburi metropolitan area, consisting of the City of Pattaya, Town of Chonburi, Portal town of Laem Chabang and Town of Sattahip on the west coast of Chonburi Province, Thailand File:Flag of Thailand.svg Thailand
The West Yorkshire Built-up Area consists of the cities of Leeds, Bradford and Wakefield, and the large town of Huddersfield, United Kingdom. File:Flag of the United Kingdom.svg United Kingdom
The Florence-Muscle Shoals Metropolitan Area in Alabama, is locally referred to as "the Quad Cities", with Florence, Muscle Shoals, Sheffield, and Tuscumbia, Alabama. Formerly, when Muscle Shoals was a mere village, this region was known as "Tri-Cities", Alabama. In fact, all except Florence are incorporated as towns. File:Flag of the United States.svg United States
Quad Cities of Davenport and Bettendorf, Iowa, and Rock Island and Moline, Illinois. It also includes a fifth member, East Moline, Illinois.
Allentown/Bethlehem, Pennsylvania and Easton, Pennsylvania/Phillipsburg, New Jersey; the collective area is often called the Lehigh Valley
The Quad Cities of Minnesota, consist of Virginia, Eveleth, Gilbert, and Mountain Iron.
The cities of Pullman, Washington, Moscow, Idaho, Lewiston, Idaho and Clarkston, Washington, have marketed themselves as "Quad Cities."[13]

More than four cities

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Border towns Country
The Triangle Region, consisting of Billund, Fredericia, Haderslev, Kolding, Middelfart, Vejen and Vejle. File:Flag of Denmark.svg Denmark
The Ruhr district consisting of Dortmund, Essen, Duisburg, Bochum, Oberhausen, Mülheim, Bottrop, Gelsenkirchen and Herne in its core. File:Flag of Germany.svg Germany
The cities of New Delhi, Noida, Greater Noida, Ghaziabad, Gurgaon and Faridabad have formed a huge metropolitan area known as National Capital Region (India). File:Flag of India.svg India
The cities of Mumbai, Thane, Navi Mumbai, Kalyan-Dombivli, Mira-Bhayandar, Vasai-Virar, Panvel, Bhiwandi, Ulhasnagar, Ambarnath and Badlapur have formed a huge Mumbai Metropolitan Region.
The cities of Kuala Lumpur, Petaling Jaya, Subang Jaya, Puchong, Shah Alam, Klang, Port Klang, Putrajaya, Cyberjaya and Kajang have formed a huge metropolitan area (around the size of Singapore) known as Greater Kuala Lumpur. File:Flag of Malaysia.svg Malaysia
The cities of Karaganda, Temirtau, Shakhtinsk, Abai, Saran, Topar, Dolinka, Shahan, Kokpekti, and Novodolinsky form an industrial-mining area known since Soviet times as Karbass (Karaganda coal basin). File:Flag of Kazakhstan.svg Kazakhstan
The cities of Będzin, Bytom, Chorzów, Czeladź, Dąbrowa Górnicza, Gliwice, Jaworzno, Katowice, Knurów, Mikołów, Mysłowice, Piekary Śląskie, Ruda Śląska, Siemianowice Śląskie, Świętochłowice, Sosnowiec, Tychy, Tarnowskie Góry, and Zabrze form the Katowice urban area. File:Flag of Poland.svg Poland
Illinois and Iowa: The cities of Davenport and Bettendorf in Iowa; Rock Island, Moline and East Moline in Illinois form a metropolitan area known as the Quad Cities. File:Flag of the United States.svg United States
Michigan and Wisconsin include the 6 cities of Iron Mountain, Kingsford, Quinnesec (in Michigan), Aurora, and Niagara (in Wisconsin). The area is collectively known as the Iron Mountain Area.
Virginia: Norfolk, Chesapeake, Hampton, Newport News, Portsmouth, Suffolk, and Virginia Beach; the cities' collective metropolitan area is often called Hampton Roads

Unincorporated communities

Even unincorporated communities, which are called "cities" in everyday conversation, can also be called "twin cities" if they also have a neighbor that's also unincorporated, or even a proper city.

Examples:

Examples of cities formed by amalgamation

Asia

China
India
Japan
  • Fukuoka in Japan, a city of 1.4 million people, formerly the twin cities of Hakata and Fukuoka until the late 19th century.
  • Kitakyushu in Japan, a city of 900,000 people, created in 1963 by the merger of Yahata, Kokura, Moji, Wakamatsu, and Tobata. Yahata and Kokura had formerly been major cities in their own right.
  • Saitama in Japan, a city of 1.2 million people, created in 2001 by the merger of the cities of Urawa, Omiya, Yono, and later Iwatsuki. Urawa and Omiya could formerly have been considered twin cities.
Pakistan
  • Islamabad, the capital city of Pakistan, has been expanded to include smaller towns including Rawat in its territory.
  • Lahore, the second largest city of Pakistan, has, as of 2013, grown out so much that small towns by this giant city, such as Shahdara, have been absorbed in its city limits.
Philippines
Taiwan
  • The former cities of Taoyuan and Zhongli, Taiwan, which merged along with the entire county in 2014 to form a single municipality city of Taoyuan, the two cities sit directly next to each other and shares almost the same population.
Thailand
  • Bangkok, the capital and largest city of Thailand, was created in 1971, when the previous Bangkok province (Phra Nakhon) was merged with Thonburi province.
Vietnam
  • The cities of Saigon and Cholon merged in 1931 to form a single city named Saigon-Cholon; in 1956, the name Cholon was dropped and the city became known as Saigon (now Ho Chi Minh City).
  • The city of Hà Đông, capital of Hà Tây Province was merged into Hà Nội upon the latter's amalgamation into Hà Nội in August 2008. Since then, Hà Đông became an urban district (quận) of Hà Nội.

Europe

Germany
Greece
  • Athens incorporated dozens of villages and towns and absorbed whole of Athens basin and parts outside of it, notably Piraeus.
Hungary
The Netherlands
Spain
United Kingdom

North America

Canada
United States

Fictional twin cities

See also

Notes

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References

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  9. Weather story from 2006 The Hindu Business Line. Retrieved 2006-12-31
  10. [1] [2] [3] [4] [5] [6] [7]
  11. "It's a wise man who knows where Chatham ends and Rochester begins." Charles Dickens
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  15. See e.g. the introduction of The Hogfather q:Terry Pratchett's Hogfather
  16. The Flash (volume 1) #123, DC Comics, September 1961
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  19. Action Comics #451, DC Comics, September 1975
  20. New Adventures of Superboy #22, DC Comics, October 1981
  21. World's Finest Comics #259, DC Comics, October–November 1979
  22. Burroughs, Edgar Rice (1917). A Princess of Mars. A. C. McClurg & Co. pp. 279–80, 305, 313–14.

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