Madison County, IA Demographics
Madison County, IA is the 45th most populous of 99 counties in Iowa, with 16,548 residents across 561 square miles. That is about 29 people per square mile.
At the 2020 census
| Population | 16,548 |
|---|---|
| Land area | 561 sq mi |
| Density | 29 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Madison 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: Madison County, IA
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Madison County, IA — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Madison County, IA
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 602 | 5,243 | 5.9 | 884 |
| Census Tract 603 | 4,191 | 325.3 | 13 |
| Census Tract 601.01 | 3,565 | 116.6 | 31 |
| Census Tract 601.02 | 3,549 | 113.1 | 31 |
Related places
Other counties nearby
Nearest counties
Metro areas containing Madison 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.