Sangamon County, Illinois
Sangamon County: county in Illinois, United States
About
Sangamon County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 197,465 and a population density of 87 people per km². After 10 years in 2020 county had an estimated population of 193,882 inhabitants. Its county seat is Springfield. The county was created 205 years ago in 1820.
County Snapshot
Sangamon County at a glance
Sangamon County currently has 33 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
33
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
SpringfieldPopulation 113,671
Top linked places
Quick Facts about Sangamon County
| Population | 193,882 (2020) |
| Country | United States of America |
| State | Illinois (United States) |
| Different from | Sangamon |
| Area | 2271 km2 |
| Water as percent of area | 1% |
| Land as percent of area | 99% |
| Latitude & Longitude | 39.7582,-89.6589 |
| Named for | Sangamon River |
| Altitude | 610 feet / 186 meters |
| Capital | Springfield |
| Establishment | January 01, 1821 |
| Time Zone | America/Chicago |
| Local time | 11:04:51 (15th April 2026) |
| Density | 85 Pop. per km² as of 2020 |
| Population growth | -1.85% (2010-2020) |
| Weather | 78℉ Showers And Thunderstorms Likely 7-days weather |
Geography
Sangamon County is located at 39°45'29"N 89°39'32"W (39.7581700, -89.6589000). It has 6 neighbors: Cass County, Christian County, Macoupin County, Montgomery County, Morgan County and Logan County.
Sangamon County map
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The largest city of Sangamon County is Springfield with a population of 113,671. Other cities include, Chatham population 13,159, Sherman population 4,660, Auburn population 4,591 and Rochester population 3,715. See all Sangamon County cities & populated places.
Sangamon County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Sangamon County.
| City Name | Population | Title |
|---|---|---|
| Springfield | 113,671 | The capital of Illinois and the county seat of Sangamon County. |
| Chatham | 13,159 | Village in Illinois, USA |
| Woodside | 10,484 | Township in Sangamon County, Illinois |
| Sherman | 4,660 | Village in Illinois, USA |
| Auburn | 4,591 | City in Sangamon County, Illinois, United States |
| Rochester | 3,715 | Village in Sangamon County, Illinois, United States |
| Riverton | 3,430 | Village in Illinois |
| Pawnee | 2,646 | City in Oklahoma |
| Buckhart | 1,679 | Unincorporated community in Illinois |
| Jerome | 1,575 | Village in Illinois, United States |
| Southern View | 1,557 | City in Sangamon County, Illinois, United States of America |
| Williamsville | 1,490 | Village in the United States |
| Leland Grove | 1,451 | City in Sangamon County, Illinois, United States |
| Grandview | 1,369 | City in Sangamon County, Illinois, United States of America |
| New Berlin | 1,329 | Township in Sangamon County, Illinois |
| Divernon | 1,096 | City in Illinois, United States of America |
Weather
Showers and thunderstorms likely. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
7-Day ForecastOfficial website of Sangamon County
Official WebsiteDemographics
According to census records, the population of Sangamon County decreased by 1.85% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 197,465 | - | census |
| 2011 | 199,038 | 0.79% | estimation process |
| 2012 | 199,404 | 0.18% | estimation process |
| 2013 | 199,141 | -0.13% | estimation process |
| 2014 | 199,184 | 0.02% | estimation process |
| 2015 | 198,898 | -0.14% | estimation process |
| 2016 | 198,026 | -0.44% | estimation process |
| 2017 | 197,072 | -0.48% | estimation process |
| 2018 | 195,639 | -0.73% | estimation process |
| 2019 | 194,672 | -0.5% | estimation process |
| 2020 | 193,882 | -0.41% | estimation process |
People born in Sangamon County (5)
People born in Sangamon County, including politician Charles R. Evans, lawman, outlaw and gunfighter Jim Courtright, cattleman Joseph McCoy, .
More notable people
- William H. Chamberlain (American Democratic politician) he was born in 22/01/1931
- James Robert Cardwell (Dentist; First president of the Oregon State Horticultural Society.) he was born in 11/09/1830
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. |
| 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. |
| Rockford | 144,835 | The second most populous city in Illinois. |