Montgomery County, IL Demographics
Montgomery County, IL is the 48th most populous of 102 counties in Illinois, with 28,288 residents across 704 square miles. That is about 40 people per square mile.
At the 2020 census
| Population | 28,288 |
|---|---|
| Land area | 704 sq mi |
| Density | 40 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Montgomery 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: Montgomery County, IL
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Montgomery County, IL — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Montgomery County, IL
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 9580 | 5,579 | 146.0 | 38 |
| Census Tract 9579 | 4,590 | 11.9 | 386 |
| Census Tract 9576 | 3,455 | 167.4 | 21 |
| Census Tract 9573 | 3,286 | 89.4 | 37 |
| Census Tract 9578 | 3,217 | 2.6 | 1,252 |
| Census Tract 9575 | 2,990 | 173.8 | 17 |
| Census Tract 9577 | 2,935 | 2.9 | 1,003 |
| Census Tract 9574 | 2,236 | 109.8 | 20 |
Related places
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.