Decatur, IL Metro Area Demographics
Decatur, IL Metro Area is the 384th most populous of 935 metro areas in the United States, with 103,998 residents across 581 square miles. That is about 179 people per square mile.
At the 2020 census
| Population | 103,998 |
|---|---|
| Land area | 581 sq mi |
| Density | 179 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Decatur, IL Metro Area compares to the US
We're computing this metro area's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: Decatur, IL Metro Area
Measured from the metro area's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Decatur, IL Metro Area — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Counties in the Decatur, IL Metro Area area
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Macon County | 103,998 | 580.6 | 179 |
Related places
About this page
This page shows demographics for a US metropolitan or micropolitan area from the 2020 census and the American Community Survey: population, land area, density, and how the area compares to national averages.
Metro areas are built from whole counties, listed below. Statistics aggregate the member counties' census tracts.