Randolph County, Illinois
Randolph County: county in Illinois, United States
About
Randolph County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 33,476 and a population density of 22 people per km². After 10 years in 2020 county had an estimated population of 31,351 inhabitants. Its county seat is Chester. The county was created 230 years ago in 1795.
County Snapshot
Randolph County at a glance
Randolph County currently has 21 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
21
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
CamptonPopulation 11,063
Top linked places
Quick Facts about Randolph County
| Population | 31,351 (2020) |
| Country | United States of America |
| State | Illinois (United States) |
| Different from | Randolph County, Randolph County, Randolph County, Randolph County, Randolph County, Randolph County, Randolph County |
| Area | 1547 km2 |
| Water as percent of area | 3.6% |
| Land as percent of area | 96.4% |
| Latitude & Longitude | 38.0521,-89.8253 |
| Named for | Edmund Randolph |
| Capital | Chester |
| Establishment | October 05, 1795 |
| Time Zone | America/Chicago |
| Local time | 22:08:34 (16th April 2026) |
| Density | 20 Pop. per km² as of 2020 |
| Population growth | -6.78% (2010-2020) |
Geography
Randolph County is located at 38°3'8"N 89°49'31"W (38.0521200, -89.8253100). It has 7 neighbors: Jackson County, Monroe County, Perry County, Saint Clair County, Washington County, Perry County and Sainte Genevieve County.
Randolph County map
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The largest city of Randolph County is Chester with a population of 8,145. Other cities include, Randolph population 4,394, Sparta population 4,202, Red Bud population 3,442 and Steeleville population 1,890. See all Randolph County cities & populated places.
Randolph County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Randolph County.
| City Name | Population | Title |
|---|---|---|
| Campton | 11,063 | Township in Kane County, Illinois |
| Chester | 8,145 | City in Illinois |
| Randolph | 4,394 | City in Illinois, United States |
| Sparta | 4,202 | City in Randolph County, Illinois |
| Red Bud | 3,442 | City in Randolph County, Illinois, United States |
| Steeleville | 1,890 | Village in Illinois, United States |
| Eden | 1,358 | Unincorporated settlement in Randolph County in southern Illinois, USA |
| Preston | 1,203 | Unincorporated community in Illinois, United States |
| Percy | 910 | City in Illinois, United States of America |
| Coulterville | 880 | City in Illinois, United States of America |
| Tilden | 827 | Town in Illinois, United States |
| Evansville | 631 | Village in Illinois |
| Blair | 602 | Place in Illinois, United States |
| Prairie du Rocher | 548 | City in Illinois, United States of America |
| Ellis Grove | 345 | City in Illinois, United States of America |
| Baldwin | 335 | Village in Randolph County, Illinois, United States |
Official website of Randolph County
Official WebsiteDemographics
According to census records, the population of Randolph County decreased by 6.78% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 1900 | 28,001 | - | estimation process |
| 2010 | 33,476 | 16.36% | census |
| 2011 | 33,425 | -0.15% | estimation process |
| 2012 | 33,075 | -1.06% | estimation process |
| 2013 | 33,175 | 0.3% | estimation process |
| 2014 | 33,138 | -0.11% | estimation process |
| 2015 | 32,806 | -1.01% | estimation process |
| 2016 | 32,414 | -1.21% | estimation process |
| 2017 | 32,297 | -0.36% | estimation process |
| 2018 | 32,177 | -0.37% | estimation process |
| 2019 | 31,782 | -1.24% | estimation process |
| 2020 | 31,351 | -1.37% | estimation process |
Other places with the same name (7)
- Randolph County, North Carolina county in West Virginia, United States with a population of 144,557 people.
- Randolph County, West Virginia county in West Virginia, United States with a population of 28,387 people.
- Randolph County, Missouri county in Missouri, United States with a population of 24,409 people.
- Randolph County, Indiana county in Indiana, United States with a population of 24,191 people.
- Randolph County, Alabama county in Alabama, United States with a population of 22,920 people.
- Randolph County, Arkansas county in Arkansas, United States with a population of 18,247 people.
- Randolph County, Georgia county in Georgia, United States with a population of 6,682 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. |