Warren County, Illinois

History

Warren County was organized in 1825 out of Pike County which consisted of all portions of the state north and west of the Illinois River before 1825. Henderson County was formed in 1841 from the western area of Warren County.

Warren County was named for Dr. Joseph Warren, killed at the Battle of Bunker Hill in 1775. He is believed to have been the first officer to die in the Revolutionary War.

The current courthouse, constructed of red Portage stone, was completed in 1895.

File:Warren County Illinois 1825.png|Warren County from the time of its creation to 1831 File:Warren County Illinois 1831.png|Between 1831 and 1835, Mercer County was temporarily attached to Warren until it could organize its own county government. File:Warren_County,Illinois-_1835.png|Warren County between 1835 and 1841 File:Warren County Illinois 1841.png|Warren County in 1841, reduced to its current borders by the creation of Henderson County

Geography

According to the U.S. Census Bureau, the county has a total area of 543 sqmi, of which 542 sqmi is land and 0.6 sqmi (0.1%) is water.

Climate and weather

|Monmouth, Illinois |15|31|1.62 |21|37|1.72 |30|49|2.85 |41|63|3.76 |51|73|4.27 |60|81|4.26 |64|85|4.33 |62|83|4.02 |54|77|3.45 |43|65|2.97 |32|49|2.74 |20|35|2.32 |access-date=January 27, 2011 In recent years, average temperatures in the county seat of Monmouth have ranged from a low of 15 °F in January to a high of 85 °F in July, although a record low of -27 °F was recorded in February 1905 and a record high of 110 °F was recorded in July 1936. Average monthly precipitation ranged from 1.62 in in January to 4.33 in in July.

Adjacent counties

• Mercer County (north)
• Knox County (east)
• Fulton County (southeast)
• McDonough County (south)
• Henderson County (west)

Demographics

|align-fn=center 1790-1960 1900-1990 1990-2000 2010

2020 census

As of the 2020 census, the county had a population of 16,835. The median age was 40.9 years, with 21.3% of residents under the age of 18 and 21.0% aged 65 years or older. For every 100 females there were 98.1 males, and for every 100 females age 18 and over there were 96.5 males age 18 and over.

The racial makeup of the county was 82.2% White, 3.5% Black or African American, 0.4% American Indian and Alaska Native, 2.0% Asian, 0.1% Native Hawaiian and Pacific Islander, 5.6% from other races, and 6.2% from two or more races. Hispanic or Latino residents of any race comprised 10.6% of the population.

54.6% of residents lived in urban areas, while 45.4% lived in rural areas.

There were 6,720 households in the county, of which 27.4% had children under the age of 18 living in them. Of all households, 48.3% were married-couple households, 19.3% were households with a male householder and no spouse or partner present, and 25.2% were households with a female householder and no spouse or partner present. About 31.1% of all households were made up of individuals and 15.3% had someone living alone who was 65 years of age or older.

There were 7,602 housing units, of which 11.6% were vacant. Among occupied housing units, 74.4% were owner-occupied and 25.6% were renter-occupied. The homeowner vacancy rate was 2.5% and the rental vacancy rate was 8.3%.

Racial and ethnic composition

2010 census

At the 2010 United States census, there were 17,707 people, 6,918 households and 4,617 families residing in the county.{{cite web |access-date=July 12, 2015 |archive-url=https://archive.today/20200213032711/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_DP/DPDP1/0500000US17187 |archive-date=February 13, 2020 |url-status=dead |access-date=July 12, 2015 |archive-url=https://archive.today/20200212201137/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_SF1/GCTPH1.CY10/0500000US17187 |archive-date=February 12, 2020 |url-status=dead |access-date=July 12, 2015 |archive-url=https://archive.today/20200213011927/http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP02/0500000US17187 |archive-date=February 13, 2020 |url-status=dead

Of the 6,918 households, 29.6% had children under the age of 18 living with them, 52.2% were married couples living together, 9.7% had a female householder with no husband present, 33.3% were non-families, and 28.2% 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 39.6 years.

The median household income was $41,636 and the median family income was $49,623. Males had a median income of $40,289 and females $25,460. The per capita incomewas $20,047. About 11.0% of families and 13.4% of the population were below the poverty line, including 18.1% of those under age 18 and 10.6% of those age 65 or over.{{cite web |access-date=July 12, 2015 |archive-url=https://archive.today/20200213010952/http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP03/0500000US17187 |archive-date=February 13, 2020 |url-status=dead

Politics

Warren County is located in Illinois's 17th Congressional District and is currently represented by Democrat Cheri Bustos. For the Illinois House of Representatives, the county is split between the 93rd district, currently represented by Republican Norine Hammond, and the 94th district, currently represented by Randy Frese. The county is located in the 47th district of the Illinois Senate, and is currently represented by Republican Jil Tracy.

In presidential elections, Warren County voted for the Republican Party's candidate in every election from 1936 through 1988, often by a wide margin. From 1992 to 2012, the contest in Warren County was more competitive, with the Democratic Party's candidate winning four out of six times. In every election since then, the county has voted Republican by increasing double-digit margins.

Transportation

Transit

• Burlington Trailways
• List of intercity bus stops in Illinois

Airport

• Monmouth Municipal Airport

Major highways

• [[File:US 34.svg|20px]] U.S. Highway 34
• [[File:US 67.svg|20px]] U.S. Highway 67
• [[File:Illinois 94.svg|20px]] Illinois Route 94
• [[File:Illinois 116.svg|20px]] Illinois Route 116
• [[File:Illinois 135.svg|20px]] Illinois Route 135
• [[File:Illinois 164.svg|20px]] Illinois Route 164

Law enforcement

State

• Illinois State Police District 14, Macomb

County

• Warren County Sheriff's Office In a scene in the 2018 film "Halloween", the local sheriff drives a car that says Warren County Sheriff's Department. Confirming that the fictional town of Haddonfield is located in Warren County.

Municipal

• Alexis Police Department, Alexis
• Monmouth Police Department, Monmouth

Volunteer

Warren County/Monmouth Auxiliary Police Corps

Communities

City

• Monmouth

Villages

• Alexis (partly in Mercer County)
• Kirkwood
• Little York
• Roseville

Census-designated place

• Cameron

Unincorporated communities

• Berwick
• Coldbrook
• Eleanor
• Gerlaw
• Greenbush
• Larchland
• Ormonde
• Ponemah
• Shanghai City
• Smithshire
• Swan Creek
• Utah
• Youngstown

Townships

Warren County is divided into these townships:

• Berwick
• Cold Brook
• Ellison
• Floyd
• Greenbush
• Hale
• Kelly
• Lenox
• Monmouth
• Point Pleasant
• Roseville
• Spring Grove
• Sumner
• Swan
• Tompkins

References

References

1. (March 2025). "County Population Totals and Components of Change: 2020–2024". U.S. Department of Commerce.
2. "Warren County, Illinois". [[United States Census Bureau]].
3. "Find a County". National Association of Counties.
4. White, Jesse. ''[http://www.cyberdriveillinois.com/publications/pdf_publications/ipub15.pdf Origin and Evolution of Illinois Counties]''. State of Illinois, March 2010.
5. "Population and Housing Unit Estimates Tables". United States Census Bureau.
6. "U.S. Decennial Census". United States Census Bureau.
7. "Historical Census Browser". University of Virginia Library.
8. "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau.
9. "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000". United States Census Bureau.
10. "State & County QuickFacts". United States Census Bureau.
11. (2021). "2020 Decennial Census Demographic Profile (DP1)".
12. (2021). "2020 Decennial Census Redistricting Data (Public Law 94-171)".
13. (2023). "2020 Decennial Census Demographic and Housing Characteristics (DHC)".
14. "1980 Census of Population - General Population Characteristics - Illinois- Table 14 - Persons by Race and Table 16 (p. 18-28) - Total Persons and Spanish Origin Persons by Type of Spanish Origin and Race (p. 29-39)".
15. "1990 Census of Population - General Population Characteristics - Illinois - Table 6 - Race and Hispanic Orogin".
16. "P004: Hispanic or Latino, and Not Hispanic or Latino by Race – 2000: DEC Summary File 1 – Warren County, Illinois".
17. "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2010: DEC Redistricting Data (PL 94-171) – Warren County, Illinois".
18. "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2020: DEC Redistricting Data (PL 94-171) – Warren County, Illinois".
19. included in the Asian category in the 1980 Census
20. included in the Asian category in the 1990 Census
21. not an option in the 1980 Census
22. not an option in the 1990 Census
23. Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections".