Grundy County, Illinois

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Grundy County is located in the U.S. state of Illinois. According to the 2020 census, it has a population of 52,533.[1] Its county seat is Morris.[2] Grundy County is part of the Chicago metropolitan area.

In 2010, the center of population of Illinois was in Grundy County, just northeast of the village of Mazon.[3]

Illinois's state fossil, the unique and bizarre Tully Monster, was first found in Mazon Creek. Grundy County is home to Dresden Generating Station—the first privately financed nuclear power plant built in the United States—and the Morris Operation—the only de facto high-level radioactive waste storage site in the United States.

History

Grundy County was established on February 17, 1841. It was formed out of LaSalle County and named after U.S. Attorney General Felix Grundy.[4] The county was well known for its coal mines[5] and attracted miners from Pennsylvania and other regions to work its deposits. The 1883 Diamond Mine Disaster occurred in Grundy County. The disaster took the lives of 69 men and boys who were trapped underground when water broke through into the mine after days of heavy rain and the pumps could not keep up with the rising water. 22 bodies were eventually recovered, the remaining 44 were left in the mine and the mine was sealed. Today a marker stands near where it was believed the majority of victims were entombed.[6]

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". (2.9%) is water.[7]

Climate and weather

Morris, Illinois
Climate chart (explanation)
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1.8
 
 
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3.1
 
 
48
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2.4
 
 
35
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█ Average max. and min. temperatures in °F
█ Precipitation totals in inches
Source: The Weather Channel[8]
Metric conversion
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44
 
 
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24
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65
 
 
18
5
 
 
78
 
 
9
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60
 
 
2
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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 Morris 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 1985 and a record high of Script error: No such module "convert". was recorded in June 1988. Average monthly precipitation ranged from Script error: No such module "convert". in February to Script error: No such module "convert". in June.[8]

Major highways

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Adjacent counties

Demographics

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Historical population
CensusPop.Template:Sronly%±
18503,023—
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188016,732Script error: No such module "String".%
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195019,217Script error: No such module "String".%
196022,350Script error: No such module "String".%
197026,535Script error: No such module "String".%
198030,582Script error: No such module "String".%
199032,337Script error: No such module "String".%
200037,535Script error: No such module "String".%
201050,063Script error: No such module "String".%
202052,533Script error: No such module "String".%
2024 (est.)53,835[9]Script error: No such module "String".%
U.S. Decennial Census[10]
1790-1960[11] 1900-1990[12]
1990-2000[13] 2010[14]

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File:USA Grundy County, Illinois age pyramid.svg
2000 census age pyramid for Grundy County

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2020 census

As of the 2020 census, the county had a population of 52,533, a median age of 38.7 years, 25.0% of residents were under the age of 18, 15.2% were 65 years of age or older, there were 99.7 males for every 100 females, and there were 96.9 males for every 100 females age 18 and over.[15]

The racial makeup of the county was 85.9% White, 1.6% Black or African American, 0.4% American Indian and Alaska Native, 0.9% Asian, less than 0.1% Native Hawaiian and Pacific Islander, 3.4% from some other race, and 7.8% from two or more races; Hispanic or Latino residents of any race comprised 10.9% of the population.[16]

Seventy-five percent of residents lived in urban areas, while 25.0% lived in rural areas.[17]

There were 20,038 households in the county, of which 34.5% had children under the age of 18 living in them, 53.1% were married-couple households, 17.5% were households with a male householder and no spouse or partner present, 21.9% were households with a female householder and no spouse or partner present, 24.9% were made up of individuals, and 11.0% had someone living alone who was 65 years of age or older.[15]

There were 21,174 housing units, of which 5.4% were vacant, 73.5% of the occupied housing units were owner-occupied, and 26.5% were renter-occupied; the homeowner vacancy rate was 1.3% and the rental vacancy rate was 7.0%.[15]

Racial and ethnic composition

Grundy County, Illinois – Racial and ethnic composition
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Race / Ethnicity (NH = Non-Hispanic) Pop 1980[18] Pop 1990[19] Pop 2000[20] Pop 2010[21] Pop 2020[22] % 1980 % 1990 % 2000 % 2010 % 2020
White alone (NH) 29,838 31,433 35,502 44,526 43,472 97.57% 97.20% 94.58% 88.94% 82.75%
Black or African American alone (NH) 41 15 67 577 833 0.13% 0.05% 0.18% 1.15% 1.59%
Native American or Alaska Native alone (NH) 35 35 81 68 48 0.11% 0.11% 0.22% 0.14% 0.09%
Asian alone (NH) 108 105 112 318 466 0.35% 0.32% 0.30% 0.64% 0.89%
Native Hawaiian or Pacific Islander alone (NH) x [23] x [24] 2 12 16 x x 0.01% 0.02% 0.03%
Other race alone (NH) 49 1 3 25 122 0.16% 0.00% 0.01% 0.05% 0.23%
Mixed race or Multiracial (NH) x [25] x [26] 216 441 1,864 x x 0.58% 0.88% 3.55%
Hispanic or Latino (any race) 511 748 1,552 4,096 5,712 1.67% 2.31% 4.13% 8.18% 10.87%
Total 30,582 32,337 37,535 50,063 52,533 100.00% 100.00% 100.00% 100.00% 100.00%

2010 census

As of the 2010 United States census, there were 50,063 people, 18,546 households, and 13,431 families residing in the county.[27] The population density was Script error: No such module "convert".. There were 19,996 housing units at an average density of Script error: No such module "convert"..[7] The racial makeup of the county was 93.7% white, 1.2% black or African American, 0.7% Asian, 0.2% American Indian, 2.7% from other races, and 1.5% from two or more races. Those of Hispanic or Latino origin made up 8.2% of the population.[27] In terms of ancestry, 28.3% were German, 23.0% were Irish, 12.7% were Italian, 9.4% were Polish, 8.6% were English, 7.1% were Norwegian, and 3.0% were American.[28]

Of the 18,546 households, 38.6% had children under the age of 18 living with them, 57.8% were married couples living together, 9.7% had a female householder with no husband present, 27.6% were non-families, and 22.5% of all households were made up of individuals. The average household size was 2.69 and the average family size was 3.16. The median age was 36.1 years.[27]

The median income for a household in the county was $64,297 and the median income for a family was $75,000. Males had a median income of $58,491 versus $36,592 for females. The per capita income for the county was $27,895. About 5.2% of families and 6.9% of the population were below the poverty line, including 8.0% of those under age 18 and 6.5% of those age 65 or over.[29]

Communities

Map of Grundy County, Illinois.
Map of Grundy County, Illinois.

City

Villages

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Former Communities

Townships

Grundy County is divided into seventeen townships:

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Unincorporated communities

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Politics

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Education

K-12 school districts include:[30]

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Secondary school districts include:[30]

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Elementary school districts include:[30]

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See also

References

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  23. ↑ included in the Asian category in the 1980 Census
  24. ↑ included in the Asian category in the 1990 Census
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  26. ↑ not an option in the 1990 Census
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External links

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