Grundy County, Illinois

County in Illinois, United States

U.S. county in Illinois

Grundy County

U.S. county

Grundy County Courthouse

Grundy County Courthouse

Location within the U.S. state of Illinois

Illinois's location within the U.S.

Country|  United States
State|  Illinois
Founded| February 17, 1841
Named for| Felix Grundy
Seat| Morris
Largest city| Morris
Area

• Total| 430 sq mi (1,100 km2)
• Land| 418 sq mi (1,080 km2)
• Water| 12 sq mi (30 km2)  2.9%
Population

(2010)

• Total| 50,063
• Estimate

(2018)

| 50,972
• Density| 120/sq mi (45/km2)
Time zone| UTC−6 (Central)
• Summer (DST)| UTC−5 (CDT)
Congressional district| 16th
Website| www.grundyco.org

Grundy County is a county in the U.S. state of Illinois. According to the 2010 census, it has a population of 50,063.[1] Its county seat is Morris.[2]

Grundy County is part of the Chicago-Naperville-Elgin, IL-IN-WI Metropolitan Statistical 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.

## Contents

* 1 History
* 2 Geography
* 2.1 Climate and weather
* 2.2 Major highways
* 2.3 Adjacent counties
* 3 Demographics
* 4 Communities
* 4.1 City
* 4.2 Villages
* 4.3 Townships
* 4.4 Unincorporated communities
* 5 Politics
* 6 See also
* 7 References
* 8 External links

## History

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Grundy County was established on February 17, 1841. It was formed out of LaSalle County and named after U.S. Attorney General Felix Grundy (1777–1840).[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]

* Grundy County at the time of its creation in 1841

## Geography

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According to the U.S. Census Bureau, the county has a total area of 430 square miles (1,100 km2), of which 418 square miles (1,080 km2) is land and 12 square miles (31 km2) (2.9%) is water.[7]

### Climate and weather

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Morris, Illinois

Climate chart (explanation)

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1.8

1.6

2.7

3.5

4.2

3.7

3.4

2.5

3.1

2.4

Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[8]
| Metric conversion

−11

100

106

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 13 °F (−11 °C) in January to a high of 85 °F (29 °C) in July, although a record low of −24 °F (−31 °C) was recorded in January 1985 and a record high of 103 °F (39 °C) was recorded in June 1988. Average monthly precipitation ranged from 1.59 inches (40 mm) in February to 4.16 inches (106 mm) in June.[8]

### Major highways

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* File:I-55.svg I-55
* I-80
* US 6
* IL 17
* IL 47
* File:Illinois 53.svg IL 53
* File:Illinois 113.svg IL 113

### Adjacent counties

[edit | edit source]

* Kendall (north)
* Will (east)
* Kankakee (southeast)
* Livingston (south)
* LaSalle (west)

## Demographics

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Historical population

Census | Pop. |  | %±
1850| 3,023| | —
1860| 10,379| | 243.3%
1870| 14,938| | 43.9%
1880| 16,732| | 12.0%
1890| 21,024| | 25.7%
1900| 24,136| | 14.8%
1910| 24,162| | 0.1%
1920| 18,580| | −23.1%
1930| 18,678| | 0.5%
1940| 18,398| | −1.5%
1950| 19,217| | 4.5%
1960| 22,350| | 16.3%
1970| 26,535| | 18.7%
1980| 30,582| | 15.3%
1990| 32,337| | 5.7%
2000| 37,535| | 16.1%
2010| 50,063| | 33.4%
2020 (est.)| 52,533| [9]| 4.9%
U.S. Decennial Census[10]
1790-1960[11] 1900-1990[12]
1990-2000[13] 2010-2013[1]

File:USA Grundy County, Illinois age pyramid.svg2000 census age pyramid for Grundy County

As of the 2010 United States Census, there were 50,063 people, 18,546 households, and 13,431 families residing in the county.[14] The population density was 119.8 inhabitants per square mile (46.3/km2). There were 19,996 housing units at an average density of 47.8 per square mile (18.5/km2).[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.[14] 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.[15]

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.[14]

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.[16]

## Communities

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

### City

[edit | edit source]

* Morris

### Villages

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* Braceville
* Carbon Hill
* Channahon (part)
* Coal City (part)
* Diamond (part)
* Dwight (part)
* East Brooklyn
* Gardner
* Godley (part)
* Kinsman
* Mazon
* Minooka (mostly)
* Seneca (part)
* South Wilmington
* Verona

### Townships

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Grundy County is divided into seventeen townships:

* Aux Sable
* Braceville
* Erienna
* Felix
* Garfield
* Goodfarm
* Goose Lake
* Greenfield
* Highland
* Maine
* Mazon
* Morris
* Nettle Creek
* Norman
* Saratoga
* Vienna
* Wauponsee

### Unincorporated communities

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* Mazonia
* Paytonville
* Nettle Creek
* Wauponsee

## Politics

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Presidential election results

Presidential election results[17] Year  | Republican | Democratic | Third parties

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2020 | 61.9% 16,523 | 36.1% 9,626 | 2.0% 542
2016 | 57.9% 13,454 | 34.7% 8,065 | 7.4% 1,718
2012 | 53.2% 11,343 | 44.3% 9,451 | 2.4% 519
2008 | 48.1% 10,687 | 49.8% 11,063 | 2.2% 482
2004 | 56.5% 11,198 | 42.7% 8,463 | 0.9% 170
2000 | 52.5% 8,709 | 45.3% 7,516 | 2.2% 359
1996 | 41.5% 6,177 | 45.4% 6,759 | 13.2% 1,966
1992 | 39.0% 6,346 | 37.6% 6,122 | 23.4% 3,797
1988 | 60.9% 8,743 | 38.5% 5,525 | 0.7% 93
1984 | 67.0% 9,595 | 32.6% 4,671 | 0.4% 59
1980 | 63.6% 8,397 | 30.1% 3,970 | 6.3% 837
1976 | 57.4% 7,581 | 41.9% 5,534 | 0.7% 86
1972 | 70.7% 8,725 | 29.0% 3,584 | 0.3% 32
1968 | 59.5% 6,607 | 30.7% 3,407 | 9.8% 1,091
1964 | 51.3% 5,522 | 48.7% 5,246 |
1960 | 61.9% 6,948 | 38.1% 4,276 | 0.0% 4
1956 | 74.5% 7,640 | 25.5% 2,618 | 0.0% 3
1952 | 70.1% 7,347 | 29.8% 3,118 | 0.1% 13
1948 | 64.4% 5,954 | 35.2% 3,255 | 0.3% 31
1944 | 63.9% 6,310 | 35.9% 3,544 | 0.2% 22
1940 | 61.4% 6,593 | 38.2% 4,105 | 0.4% 43
1936 | 52.6% 5,360 | 44.0% 4,481 | 3.4% 344
1932 | 48.2% 4,491 | 51.1% 4,755 | 0.7% 69
1928 | 61.5% 5,126 | 38.1% 3,174 | 0.4% 29
1924 | 64.0% 4,337 | 10.9% 742 | 25.1% 1,701
1920 | 80.1% 4,647 | 13.8% 803 | 6.1% 355
1916 | 66.4% 4,811 | 30.9% 2,241 | 2.7% 197
1912 | 29.2% 1,919 | 24.8% 1,172 | 46.1% 2,179
1908 | 63.1% 3,127 | 27.4% 1,359 | 9.5% 471
1904 | 69.7% 3,448 | 17.0% 841 | 13.3% 656
1900 | 65.5% 3,735 | 29.6% 1,687 | 4.9% 280
1896 | 59.7% 3,246 | 38.1% 2,074 | 2.2% 119
1892 | 50.3% 2,159 | 44.0% 1,892 | 5.7% 245

## See also

[edit | edit source]

* National Register of Historic Places listings in Grundy County, Illinois

## References

[edit | edit source]

1. ^ a b "State & County QuickFacts". United States Census Bureau. Archived from the original on June 6, 2011. Retrieved July 5, 2014.
2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
3. ^ "Centers of Population by State: 2010". United States Census Bureau. Archived from the original on January 3, 2014. Retrieved July 5, 2014.
4. ^ Adams, James N; Volkel, Lowell M (1989). Keller, William E (ed.). Illinois Place Names. Springfield: Illinois State Historical Society. ISBN 978-0-912226-24-8.
5. ^ History of Grundy County, Illinois: Containing a History from the Earliest Settlement to the Present Time ... , Biographical Sketches, Portraits of Some of the Early Settlers, Prominent Men, Etc. Vol. 1–2. O.L. Basken & Company, Historical Publishers. 1882. OCLC 27722005.
6. ^ "Diamond Mine Disaster Victims – February 16, 1883". Grundy County ILGenWeb. February 5, 2015. Retrieved August 11, 2019.
7. ^ a b "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Archived from the original on February 12, 2020. Retrieved July 11, 2015.
8. ^ a b "Monthly Averages for Morris, Illinois". The Weather Channel. Retrieved January 27, 2011.
9. ^ "Population and Housing Unit Estimates". Retrieved November 6, 2019.
10. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved July 5, 2014.
11. ^ "Historical Census Browser". University of Virginia Library. Retrieved July 5, 2014.
12. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 5, 2014.
13. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Retrieved July 5, 2014.
14. ^ a b c "DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved July 11, 2015.
15. ^ "DP02 SELECTED SOCIAL CHARACTERISTICS IN THE UNITED STATES – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved July 11, 2015.
16. ^ "DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved July 11, 2015.
17. ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org.

## External links

[edit | edit source]

* Grundy County website
* Grundy County Jobs

Places adjacent to Grundy County, Illinois

|  | Kendall County |

|
|

|  |
LaSalle County |

Grundy County, Illinois

| Will County
|  |
| Livingston County | Kankakee County

* v
* t
* e

Municipalities and communities of Grundy County, Illinois, United States

County seat: Morris

Cities|

* Morris

Map of Illinois highlighting Grundy County

Villages|

* Braceville
* Carbon Hill
* Channahon‡
* Coal City‡
* Diamond‡
* Dwight‡
* East Brooklyn
* Gardner
* Godley‡
* Kinsman
* Mazon
* Minooka‡
* Seneca‡
* South Wilmington
* Verona

Townships|

* Aux Sable
* Braceville
* Erienna
* Felix
* Garfield
* Goodfarm
* Goose Lake
* Greenfield
* Highland
* Maine
* Mazon
* Morris
* Nettle Creek
* Norman
* Saratoga
* Vienna
* Wauponsee

Unincorporated
communities|

* Mazonia
* Nettle Creek
* Paytonville
* Wauponsee

Footnotes|

‡This populated place also has portions in an adjacent county or counties

* United States portal

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Chicago metropolitan area

Major city|

* Chicago

Cities
(over 30,000 in 2010)|

* Aurora
* Berwyn
* Calumet City
* Chicago Heights
* Crystal Lake
* DeKalb
* Des Plaines
* Elgin
* Elmhurst
* Evanston
* Gary
* Hammond
* Joliet
* Kenosha
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Towns and villages
(over 30,000 in 2010)|

* Addison
* Algonquin
* Arlington Heights
* Bartlett
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* Buffalo Grove
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* Cicero
* Downers Grove
* Elk Grove Village
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* Skokie
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Counties|

* Cook
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* Lake, IN
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Illinois, United States

* v
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Coordinates: 41°17′N 88°26′W﻿ / ﻿41.29°N 88.43°W﻿ / 41.29; -88.43
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