Clinton County, Illinois
Clinton County: county in Illinois, United States.
About
Clinton County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 37,762 and a population density of 29 people per km². After 10 years in 2020 county had an estimated population of 37,398 inhabitants. Its county seat is Carlyle. The county was created 201 years ago in 1824.
County Snapshot
Clinton County at a glance
Clinton County currently has 5 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
5
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Illinois counties
102
Open related pagesLargest city
BreesePopulation 4,538
Top linked places
Quick Facts about Clinton County
| Population | 37,398 (2020) |
| Country | United States of America |
| State | Illinois (United States) |
| Different from | Clinton County, Clinton County, Clinton County, Clinton County, Clinton County, Clinton County, Clinton County, Clinton County |
| Area | 1304 km2 |
| Water as percent of area | 5.8% |
| Land as percent of area | 94.2% |
| Latitude & Longitude | 38.6065,-89.4225 |
| Named for | DeWitt Clinton |
| Capital | Carlyle |
| Establishment | December 27, 1824 |
| Time Zone | America/Chicago |
| Local time | 05:30:25 (23rd September 2026) |
| Density | 29 Pop. per km² as of 2020 |
| Population growth | -0.96% (2010-2020) |
Geography
Clinton County is located at 38°36'23"N 89°25'21"W (38.6064500, -89.4224800). It has 5 neighbors: Bond County, Fayette County, Marion County, Saint Clair County and Washington County.
Clinton County map
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The largest city of Clinton County is Breese with a population of 4,538. Other cities include, New Baden population 3,205, Carlyle population 3,148, Trenton population 2,566 and Aviston population 2,156. See all Clinton County cities & populated places.
Clinton County Populated Places
Cities, towns, neighborhoods & other populated places in Clinton County.
| City Name | Population | Title |
|---|---|---|
| Breese | 4,538 | City in Illinois, USA; suburb of Greater St. |
| New Baden | 3,205 | City in Illinois, United States of America |
| Carlyle | 3,148 | City in Illinois, United States |
| Trenton | 2,566 | City in Illinois |
| Aviston | 2,156 | Village in United States of America |
Official website of Clinton County
Official WebsiteDemographics
According to census records, the population of Clinton County decreased by 0.96% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 37,762 | - | census |
| 2011 | 38,031 | 0.71% | estimation process |
| 2012 | 37,918 | -0.3% | estimation process |
| 2013 | 37,731 | -0.49% | estimation process |
| 2014 | 37,646 | -0.23% | estimation process |
| 2015 | 37,665 | 0.05% | estimation process |
| 2016 | 37,599 | -0.18% | estimation process |
| 2017 | 37,645 | 0.12% | estimation process |
| 2018 | 37,697 | 0.14% | estimation process |
| 2019 | 37,562 | -0.36% | estimation process |
| 2020 | 37,398 | -0.44% | estimation process |
Other places with the same name (8)
- Clinton County, New York county in New York, United States. with a population of 79,778 people.
- Clinton County, Michigan county in Michigan, United States. with a population of 79,753 people.
- Clinton County, Iowa county in Iowa, United States of America. with a population of 46,392 people.
- Clinton County, Ohio county in Ohio, United States of America. with a population of 41,921 people.
- Clinton County, Pennsylvania county in Pennsylvania, United States. with a population of 37,957 people.
- Clinton County, Indiana county in Indiana, United States of America. with a population of 32,206 people.
- Clinton County, Missouri county in Missouri, United States. with a population of 20,553 people.
- Clinton County, Kentucky county in Kentucky, United States of America. with a population of 10,110 people.
Illinois Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Cook County | 5,108,284 | County in Illinois, United States |
| Chicago | 2,677,643 | The third most populous city in the United States and the center of the Chicago metropolitan area. |
| DuPage County | 917,481 | County in Illinois, United States |
| Lake County | 693,593 | County in Oregon, United States |
| Will County | 688,726 | County in Illinois, United States |
| Kane County | 531,010 | County in southern Utah, United States |
| McHenry County | 305,888 | County in Illinois, United States |
| Winnebago County | 281,295 | County in Illinois, United States |
| Madison County | 262,635 | County in Montana, United States |
| Saint Clair County | 258,046 | The County of St. |
| Champaign County | 209,192 | County in Illinois, United States |
| Aurora | 196,383 | The second most populous city in Illinois. |
| Sangamon County | 193,882 | County in Illinois, United States |
| Peoria County | 177,652 | County in Illinois, United States of America |
| McLean County | 171,256 | County in North Dakota, United States |
| Naperville | 147,986 | The second most populous city in Illinois. |