Marion County, Illinois

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Marion County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 37,729.[1] Its county seat is Salem.[2] Marion County comprises the Centralia, IL Micropolitan Statistical Area, which is included in the St. Louis-St. Charles-Farmington, MO-IL Combined Statistical Area.

History

Marion County was organized on January 24, 1823, from portions of Jefferson and Fayette counties. It was named in honor of Revolutionary War Gen. Francis Marion, the "Swamp Fox".[3]

Geography

According to the U.S. Census Bureau, the county has a total area of Script error: No such module "convert"., of which Script error: No such module "convert". is land and Script error: No such module "convert". (0.6%) is water.[4]

The southwest corner of Marion County is the intersection of the Baseline with the Third Principal Meridian, the point of origin for the third survey of the Northwest Territory under the Land Ordinance of 1785. The origin is marked with a boulder south of Centralia just off U.S. 51.

Climate and weather

Salem, Illinois
Climate chart (explanation)
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Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[5]
Metric conversion
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Average max. and min. temperatures in °C
Precipitation totals in mm

In recent years, average temperatures in the county seat of Salem have ranged from a low of Script error: No such module "convert". in January to a high of Script error: No such module "convert". in July, although a record low of Script error: No such module "convert". was recorded in January 1994 and a record high of Script error: No such module "convert". was recorded in August 1983. Average monthly precipitation ranged from Script error: No such module "convert". in January to Script error: No such module "convert". in May.[5]

Transit

Major highways

Adjacent counties

Demographics

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Historical population
CensusPop.Template:Sronly
18302,125
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18506,720Script error: No such module "String".%
186012,739Script error: No such module "String".%
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189024,341Script error: No such module "String".%
190030,446Script error: No such module "String".%
191035,094Script error: No such module "String".%
192037,497Script error: No such module "String".%
193035,635Script error: No such module "String".%
194047,989Script error: No such module "String".%
195041,700Script error: No such module "String".%
196039,349Script error: No such module "String".%
197038,986Script error: No such module "String".%
198043,523Script error: No such module "String".%
199041,561Script error: No such module "String".%
200041,691Script error: No such module "String".%
201039,437Script error: No such module "String".%
202037,729Script error: No such module "String".%
2024 (est.)36,437[6]Script error: No such module "String".%
U.S. Decennial Census[7]
1790-1960[8] 1900-1990[9]
1990-2000[10] 2010[11]

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2020 census

As of the 2020 census, the county had a population of 37,729. The median age was 42.7 years, with 22.7% of residents under the age of 18 and 21.2% aged 65 or older. For every 100 females there were 96.2 males, and for every 100 females age 18 and over there were 93.1 males age 18 and over.[12]

52.2% of residents lived in urban areas, while 47.8% lived in rural areas.[13]

There were 15,620 households in the county, of which 28.0% had children under the age of 18 living in them. Of all households, 44.8% were married-couple households, 19.2% were households with a male householder and no spouse or partner present, and 28.2% were households with a female householder and no spouse or partner present. About 30.7% of all households were made up of individuals and 15.4% had someone living alone who was 65 years of age or older.[12]

There were 17,358 housing units, of which 10.0% were vacant. Among occupied housing units, 73.7% were owner-occupied and 26.3% were renter-occupied. The homeowner vacancy rate was 1.6% and the rental vacancy rate was 9.1%.[12]

Racial and ethnic composition

Marion County, Illinois – Racial and ethnic composition
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Race / Ethnicity (NH = Non-Hispanic) Pop 1980[14] Pop 1990[15] Pop 2000[16] Pop 2010[17] Pop 2020[18] % 1980 % 1990 % 2000 % 2010 % 2020
White alone (NH) 41,487 39,477 38,951 36,456 33,150 95.32% 94.99% 93.43% 92.44% 87.86%
Black or African American alone (NH) 1,518 1,507 1,593 1,536 1,509 3.49% 3.63% 3.82% 3.89% 4.00%
Native American or Alaska Native alone (NH) 68 106 85 105 94 0.16% 0.26% 0.20% 0.27% 0.25%
Asian alone (NH) 138 227 235 224 349 0.32% 0.55% 0.56% 0.57% 0.93%
Native Hawaiian or Pacific Islander alone (NH) x [19] x [20] 15 9 1 x x 0.04% 0.02% 0.00%
Other race alone (NH) 42 12 26 11 97 0.10% 0.03% 0.06% 0.03% 0.26%
Mixed race or Multiracial (NH) x [21] x [22] 408 554 1,817 x x 0.98% 1.40% 4.82%
Hispanic or Latino (any race) 270 232 378 542 712 0.62% 0.56% 0.91% 1.37% 1.89%
Total 43,523 41,561 41,691 39,437 37,729 100.00% 100.00% 100.00% 100.00% 100.00%

2010 census

As of the 2010 United States census, there were 39,437 people, 16,148 households, and 10,746 families residing in the county.[23] The population density was Script error: No such module "convert".. There were 18,296 housing units at an average density of Script error: No such module "convert"..[4] The racial makeup of the county was 93.1% white, 3.9% black or African American, 0.6% Asian, 0.3% American Indian, 0.4% from other races, and 1.6% from two or more races. Those of Hispanic or Latino origin made up 1.4% of the population.[23] In terms of ancestry, 27.5% were German, 15.8% were Irish, 13.6% were English, and 10.8% were American.[24]

Of the 16,148 households, 30.9% had children under the age of 18 living with them, 48.9% were married couples living together, 12.8% had a female householder with no husband present, 33.5% were non-families, and 28.8% of all households were made up of individuals. The average household size was 2.40 and the average family size was 2.91. The median age was 41.4 years.[23]

The median income for a household in the county was $38,974 and the median income for a family was $50,518. Males had a median income of $41,428 versus $28,042 for females. The per capita income for the county was $20,493. About 12.2% of families and 16.5% of the population were below the poverty line, including 23.9% of those under age 18 and 9.6% of those age 65 or over.[25]

Communities

Cities

Villages

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Townships

Marion County is divided into seventeen townships:

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Unincorporated communities

Politics

Initially a strongly Democratic anti-Yankee county, Marion County has undergone two transitions. Between 1912 and 2004 it was a perfect bellwether apart from the Catholicism-influenced 1960 election when substantial anti-Catholic voting by its largely southern white population caused it to support Republican Richard Nixon. Since the beginning of the twenty-first century it has voted consistently for Republican presidential candidates.

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See also

References

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