Alexander County, Illinois
Alexander County: County in Illinois, United States
About
Alexander County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 8,238 and a population density of 13 people per km². After 10 years in 2020 county had an estimated population of 5,497 inhabitants. Its county seat is Cairo. The county was created 205 years ago in 1819.
Quick Facts about Alexander County
| Population : | 5,497 (2020) |
| Country : | United States of America |
| State : | Illinois (United States) |
| Different from : | Alexander County |
| Area : | 654 km2 |
| Water as percent of area : | 6.8% |
| Land as percent of area : | 93.2% |
| Named for : | William M. Alexander |
| Capital : | Cairo |
| Establishment : | March 03, 1819 |
| Time Zone : | America/Chicago |
| Local time : | 10:19:17 (21st November 2024) |
| Density : | 8 Pop. per km² as of 2020 |
| Population growth : | -49.86% (2010-2020) |
Geography
Alexander County is located at 37°11'30"N 89°20'16"W (37.1916000, -89.3376400). It has 6 neighbors: Pulaski County, Union County, Ballard County, Cape Girardeau County, Mississippi County and Scott County.
Alexander County map
icon to open full mode. View satellite images
The largest city of Alexander County is Cairo with a population of 1,989. Other cities include, Unity population 1,341, Olive Branch population 864, Tamms population 449 and McClure population 285. See all Alexander County cities & populated places.
Alexander County Populated Places
Cities, towns, neighborhoods & other populated places in Alexander County.
| City Name | Population | Title |
|---|---|---|
| Cairo | 1,989 | City in Illinois, United States |
| Unity | 1,341 | Unincorporated community in Illinois |
| Olive Branch | 864 | City in Alexander County, Illinois, United States of America |
| Tamms | 449 | City in Alexander County, Illinois, United States of America |
| Thebes | 303 | Village in Illinois, USA |
| McClure | 285 | Human settlement in United States of America |
| East Cape Girardeau | 268 | Town |
Alexander County has 6 neighbours.
- Pulaski County county in Illinois, United States
- Union County county in Illinois, United States
- Ballard County county in Kentucky, United States
- Cape Girardeau County county in Missouri, United States
- Mississippi County county in Missouri, United States
- Scott County county in Missouri, United States
Demographics
According to census records, the population of Alexander County decreased by 49.86% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 8,238 | - | census |
| 2011 | 7,992 | -3.08% | estimation process |
| 2012 | 7,717 | -3.56% | estimation process |
| 2013 | 7,238 | -6.62% | estimation process |
| 2014 | 7,083 | -2.19% | estimation process |
| 2015 | 6,762 | -4.75% | estimation process |
| 2016 | 6,459 | -4.69% | estimation process |
| 2017 | 6,278 | -2.88% | estimation process |
| 2018 | 6,041 | -3.92% | estimation process |
| 2019 | 5,761 | -4.86% | estimation process |
| 2020 | 5,497 | -4.8% | estimation process |
Other places with the same name (2)
- Alexander County , North Carolina county in Illinois, United States with a population of 37,441 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. |
