McLean County, Illinois

McLean County, Illinois, had an estimated population of 171,419 in 2025 across 3,065 km². The figures below come from the US Census Bureau's population estimates and the American Community Survey, each shown with its own vintage and its rank among Illinois's counties and nationally.

Population: 171,419; 2025 estimate
Area: 3,065 km²
Density: 56; per km²
Median income: $79,905; household, ACS 2024
Median age: 34.3; years, ACS 2024

How Illinois's counties spread

Amenities & Infrastructure

Indicator	Value	In Illinois	In the US
Households with Broadband2024	90.0%	23 / 102	822 / 3,144
Median Gross Rent2024	$1,009	18 / 102	960 / 3,137
Median Home Value2024	$208,400	14 / 102	1,321 / 3,139
Owner-Occupied Homes2024	65.1%	96 / 102	2,664 / 3,144
Vacant Homes2024	6.8%	87 / 102	2,718 / 3,144

Demography

Indicator	Value	In Illinois	In the US
Aged 65 and Over2024	14.6%	98 / 102	2,843 / 3,144
American Indian & Alaska Native2024	0.1%	18 / 102	1,566 / 3,144
Asian, non-Hispanic2024	5.2%	6 / 102	173 / 3,144
Average Household Size2024people	2.3	54 / 102	2,295 / 3,144
Black, non-Hispanic2024	8.4%	17 / 102	832 / 3,144
Foreign-Born2024	7.6%	13 / 102	607 / 3,144
Hispanic or Latino2024	6.4%	27 / 102	1,304 / 3,144
Median Age2024years	34.3	99 / 102	2,934 / 3,144
Sex Ratio2024per 1,000 males	1,046	12 / 102	549 / 3,144
Speak a Language Other Than English2024	9.7%	19 / 102	950 / 3,144
Under 182024	21.2%	58 / 102	1,817 / 3,144
Veterans2024	5.3%	91 / 102	2,654 / 3,144
White, non-Hispanic2024	76.2%	81 / 102	1,784 / 3,144

Economy

Indicator	Value	In Illinois	In the US
Below Poverty Line2024	12.9%	49 / 102	1,630 / 3,144
Households on SNAP2024	10.3%	85 / 102	1,852 / 3,144
Income Inequality2024index	0.474	10 / 102	660 / 3,144
Median Household Income2024	$79,905	19 / 102	589 / 3,143
Per Capita Income2024	$43,372	14 / 102	522 / 3,144
Unemployment Rate2024	3.1%	87 / 102	2,391 / 3,144

Education

Indicator	Value	In Illinois	In the US
Bachelor's Degree or Higher2024	47.2%	3 / 102	134 / 3,144
High School or Higher2024	95.9%	3 / 102	114 / 3,144

Health Coverage

Indicator	Value	In Illinois	In the US
No Health Insurance2024	4.6%	65 / 102	2,694 / 3,144
With a Disability2024	10.1%	95 / 102	2,998 / 3,144

Population & Density

Indicator	Value	In Illinois	In the US
Population2025	171,419	13 / 102	412 / 3,144
Population Density2025/km²	56	21 / 102	711 / 3,144

Work & Commute

Indicator	Value	In Illinois	In the US
Commute by Public Transit2024	0.7%	22 / 102	590 / 3,144
Households with No Vehicle2024	5.9%	51 / 102	1,276 / 3,144
Mean Commute Time2024minutes	18.3	95 / 102	2,719 / 3,143
Work from Home2024	17.5%	5 / 102	234 / 3,144

Other counties of Illinois

Compare McLean County against every other county on a map, add layers and run a scatter — open the atlas. Sources and vintages for every figure on this page are listed under datasets, or browse all 3,144 counties.