Alexander County, IL Demographics
Alexander County, IL is the 96th most populous of 102 counties in Illinois, with 5,240 residents across 235 square miles. That is about 22 people per square mile.
At the 2020 census
| Population | 5,240 |
|---|---|
| Land area | 235 sq mi |
| Density | 22 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Alexander County compares to the US
We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: Alexander County, IL
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Alexander County, IL — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Alexander County, IL
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 9576 | 1,820 | 109.0 | 17 |
| Census Tract 9577 | 1,491 | 106.4 | 14 |
| Census Tract 9578 | 1,030 | 16.0 | 64 |
| Census Tract 9579 | 899 | 3.9 | 228 |
Related places
Other counties nearby
Nearest counties
Metro areas containing Alexander County
About this page
This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.
Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.