Adams County
Adams County has lower-than-average household income, with a median household income of $66,220. Population has declined 5% since 2000. Median home value has more than doubled since 2000, reaching $162,600.
Population & growth
PEP 2025 EST:64,267 residents (Census Bureau Vintage 2025, released March 2026)
Income & economy
Housing
Race & ethnicity
Education
Commute & transportation
Work & employment
People & community
Places similar to Adams County
Compare Adams County to nearby counties
How many people live in Adams County, Illinois?
Adams County, Illinois has about 64,754 residents according to the 2024 American Community Survey.
What is the median household income in Adams County, Illinois?
The typical household in Adams County, Illinois earns about $66,220 a year. Half of households make more than that, and half make less.
Is Adams County, Illinois expensive?
In Adams County, Illinois, the median home is worth about $162,600, and the typical rent is about $828 a month.
How educated are people in Adams County, Illinois?
About 27.5% of adults age 25 and over in Adams County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Adams County, Illinois?
About 12.8% of people in Adams County, Illinois live below the federal poverty line.
Has Adams County, Illinois grown since 1990?
Yes, Adams County, Illinois has shrunk since 1990. The population has lost about 1,336 residents, a change of about -2 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024