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Cumberland County, IL Demographics

Cumberland County, IL is the 87th most populous of 102 counties in Illinois, with 10,450 residents across 346 square miles. That is about 30 people per square mile.

At the 2020 census

Population 10,450
Land area 346 sq mi
Density 30 / sq mi

Data: 2020 Census · American Community Survey 2024

How Cumberland 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: Cumberland County, IL

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

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

Census tracts in Cumberland County, IL

Name Population Sq mi Per sq mi
Census Tract 9726 4,181 114.9 36
Census Tract 9725 3,356 114.2 29
Census Tract 9724 2,913 116.8 25

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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 →