Jersey County, IL Demographics
Jersey County, IL is the 54th most populous of 102 counties in Illinois, with 21,512 residents across 370 square miles. That is about 58 people per square mile.
At the 2020 census
| Population | 21,512 |
|---|---|
| Land area | 370 sq mi |
| Density | 58 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Jersey 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: Jersey County, IL
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Jersey County, IL — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Jersey County, IL
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 104.01 | 6,098 | 26.7 | 228 |
| Census Tract 101 | 5,152 | 91.1 | 57 |
| Census Tract 103 | 3,602 | 43.4 | 83 |
| Census Tract 102 | 3,320 | 46.6 | 71 |
| Census Tract 104.02 | 1,877 | 110.9 | 17 |
| Census Tract 105 | 1,463 | 50.8 | 29 |
Related places
Other counties nearby
Nearest counties
Metro areas containing Jersey 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.