Calhoun County
Calhoun County is wealthier than most US places, with a median household income of $93,203. Population has declined 15% since 2000. 20% of adults hold a bachelor's degree or higher, below the national rate of 36%. Median home value has more than doubled since 2000, reaching $190,900. With a median age of 48.8, the population is older than the US median of 38.9. It ranks in the top 5% of US counties for household income.
Population & growth
PEP 2025 EST:4,300 residents (Census Bureau Vintage 2025, released March 2026)
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Detailed origins & ancestry
Education
Commute & transportation
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People & community
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Compare Calhoun County to nearby counties
How many people live in Calhoun County, Illinois?
Calhoun County, Illinois has about 4,330 residents according to the 2024 American Community Survey.
What is the median household income in Calhoun County, Illinois?
The typical household in Calhoun County, Illinois earns about $93,203 a year. Half of households make more than that, and half make less.
Is Calhoun County, Illinois expensive?
In Calhoun County, Illinois, the median home is worth about $190,900, and the typical rent is about $583 a month.
How educated are people in Calhoun County, Illinois?
About 20.1% of adults age 25 and over in Calhoun County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Calhoun County, Illinois?
About 6.3% of people in Calhoun County, Illinois live below the federal poverty line.
Has Calhoun County, Illinois grown since 1990?
Yes, Calhoun County, Illinois has shrunk since 1990. The population has lost about 992 residents, a change of about -19 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024