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Calhoun County, IL Demographics

Calhoun County, IL is the 100th most populous of 102 counties in Illinois, with 4,437 residents across 254 square miles. That is about 17 people per square mile.

At the 2020 census

Population 4,437
Land area 254 sq mi
Density 17 / sq mi

Data: 2020 Census · American Community Survey 2024

How Calhoun 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: Calhoun County, IL

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around Calhoun County, IL — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in Calhoun County, IL

Name Population Sq mi Per sq mi
Census Tract 9512 2,306 141.3 16
Census Tract 9513 2,131 112.5 19

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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.

Read how BlockAtlas computes population within an area →