Kendall County
Kendall County is significantly wealthier than the US average, with a median household income of $111,601. The county has more than doubled in size since 2000, adding 83,131 residents. Median home value has more than doubled since 2000, reaching $322,400. Poverty is rare here, at 5.4% of residents. It ranks in the top 1% of US counties for household income. Households here earn about 34% more than the Illinois median.
Population & growth
PEP 2025 EST:145,470 residents (Census Bureau Vintage 2025, released March 2026)
Income & economy
Housing
Race & ethnicity
Detailed origins & ancestry
+ 7 more hispanic origin groups with data
+ 40 more ancestry groups with data
Education
Commute & transportation
Work & employment
People & community
Places similar to Kendall County
Compare Kendall County to nearby counties
How many people live in Kendall County, Illinois?
Kendall County, Illinois has about 137,675 residents according to the 2024 American Community Survey.
What is the median household income in Kendall County, Illinois?
The typical household in Kendall County, Illinois earns about $111,601 a year. Half of households make more than that, and half make less.
Is Kendall County, Illinois expensive?
In Kendall County, Illinois, the median home is worth about $322,400, and the typical rent is about $1,781 a month.
How educated are people in Kendall County, Illinois?
About 36.9% of adults age 25 and over in Kendall County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Kendall County, Illinois?
About 5.4% of people in Kendall County, Illinois live below the federal poverty line.
Has Kendall County, Illinois grown since 1990?
Yes, Kendall County, Illinois has grown since 1990. The population has added about 98,262 residents, a change of about 249 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024