Adams County, Illinois
Adams County: County in Illinois, United States
About
Adams County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 67,103 and a population density of 30 people per km². After 10 years in 2020 county had an estimated population of 64,783 inhabitants. Its county seat is Quincy. The county was created 200 years ago in 1824.
Quick Facts about Adams County
| Population : | 64,783 (2020) |
| Country : | United States of America |
| State : | Illinois (United States) |
| Different from : | Adams County, Adams County, Adams County, Adams County, Adams County, Adams County, Adams County, Adams County, Adams County, Adams County, Adams County |
| Area : | 2257 km2 |
| Official name : | Adams |
| Water as percent of area : | 1.9% |
| Land as percent of area : | 98.1% |
| Named for : | John Quincy Adams |
| Capital : | Quincy |
| Establishment : | January 01, 1825 |
| Time Zone : | America/Chicago |
| Local time : | 11:34:06 (22nd February 2025) |
| Density : | 29 Pop. per km² as of 2020 |
| Population growth : | -3.58% (2010-2020) |
Geography
Adams County is located at 39°59'16"N 91°11'19"W (39.9878900, -91.1884900). It has 6 neighbors: Brown County, Pike County, Marion County, Hancock County, Schuyler County and Lewis County.
Adams County map
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The largest city of Adams County is Quincy with a population of 39,589. Other cities include, Spring Valley population 5,065, Burton population 862, Clayton population 668 and Golden population 611. See all Adams County cities & populated places.
Adams County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Adams County.
| City Name | Population | Title |
|---|---|---|
| Quincy | 39,589 | County seat of Adams County, Illinois, United States |
| Spring Valley | 5,065 | City in Illinois, United States |
| Adams | 1,536 | Civil town in Adams County, Wisconsin |
| Kingston | 1,160 | Village in Illinois, USA |
| Camp Point | 1,080 | Village in Adams County, Illinois, United States |
| Payson | 980 | Village in Illinois, United States |
| Mendon | 948 | Village in Illinois |
| Burton | 862 | Human settlement in United States of America |
| Clayton | 668 | City in Illinois, United States of America |
| Golden | 611 | City in Illinois, United States of America |
| Ursa | 596 | Village in Adams County, Illinois, United States |
| Fall Creek | 513 | Unincorporated community in Illinois, United States |
| Liberty | 500 | Village in Illinois, United States |
| Beverly | 390 | Unincorporated community in Illinois |
| Richfield | 389 | Township in Adams County, Illinois |
| Loraine | 278 | Human settlement in Illinois, United States of America |
- Official Website
Official website of Adams County
Adams County has 6 neighbours.
- Brown County county in Illinois, United States
- Pike County county in Illinois, United States
- Marion County county in northeast Missouri, United States
- Hancock County county in Illinois, United States
- Schuyler County county in Illinois, United States
- Lewis County county in Northeast Missouri, United States
Demographics
According to census records, the population of Adams County decreased by 3.58% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 67,103 | - | census |
| 2011 | 67,211 | 0.16% | estimation process |
| 2012 | 67,139 | -0.11% | estimation process |
| 2013 | 66,999 | -0.21% | estimation process |
| 2014 | 66,966 | -0.05% | estimation process |
| 2015 | 66,835 | -0.2% | estimation process |
| 2016 | 66,475 | -0.54% | estimation process |
| 2017 | 66,057 | -0.63% | estimation process |
| 2018 | 65,623 | -0.66% | estimation process |
| 2019 | 65,435 | -0.29% | estimation process |
| 2020 | 64,783 | -1.01% | estimation process |
People born in Adams County (2)
People born in Adams County, including botanist William Conklin Cusick, physician James Asher Richardson, .
List
Other places with the same name (12)
- Adams County , Colorado county in Colorado, United States with a population of 519,883 people.
- Adams County , Pennsylvania county in Pennsylvania, United States with a population of 102,742 people.
- Adams County , Indiana county in Indiana, United States with a population of 35,839 people.
- Adams County , Nebraska county in Nebraska, United States with a population of 31,321 people.
- Adams County , Mississippi county in Mississippi, United States with a population of 30,275 people.
- Adams County , Ohio county in Ohio, United States with a population of 27,531 people.
- Adams County , Wisconsin county in Wisconsin, United States with a population of 20,498 people.
- Adams County , Washington county in the state of Washington, United States with a population of 20,027 people.
- Adams County , Idaho county in Idaho, United States with a population of 4,294 people.
- Adams County , Iowa county in Iowa, United States with a population of 3,588 people.
- Adams County , North Dakota county in North Dakota, United States with a population of 2,188 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. |
