Chatham, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Chatham, Illinois is 14,740 as of the 2023 American Community Survey, making it the 166th-largest city in Illinois. The median household income is $106,030, the median home value is $231,900, and the median age is 35.1.
The population has grown 24.3% since 2010 (11,781 → 14,639).
14,740
Population
1990
People / sq mi
$106,030
Median Income
$231,900
Median Home Value
Chatham covers 7.4 sq mi of land at 1990 people per square mile.
About Chatham, IL
Chatham is a city in Illinois with a population of 14,740. It ranks #166 among cities in Illinois by population. The median age is 35.1, younger than the national median. The population is 45.0% male and 55.0% female.
The median household income in Chatham is $106,030, above the US median of $74,580. 0.8% of residents live below the federal poverty level. Home values sit at a median of $231,900, with monthly rent averaging $1,157. The homeownership rate of 79.6% is higher than the national rate of 64.8%.
Educational attainment in Chatham reflects 49.4% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 14.1% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 23.4 minutes each way.
Chatham village Population History (2010-2024)
The city of Chatham village had a population of 11,781 in 2010 and 14,639 in 2024, a 24.3% growth over 14 years. The peak was 14,639 in 2024. Average annual growth rate: 1.60%.
14,639
Population (2024)
11,781
Population (2010)
14,639
Peak (2024)
1.60%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 11,781 |
| 2011 | 11,956 |
| 2012 | 12,076 |
| 2013 | 12,188 |
| 2014 | 12,340 |
| 2015 | 12,465 |
| 2016 | 12,587 |
| 2017 | 12,775 |
| 2018 | 12,812 |
| 2019 | 13,008 |
| 2020 | 14,415 |
| 2021 | 14,468 |
| 2022 | 14,461 |
| 2023 | 14,576 |
| 2024 | 14,639 |
Race & Ethnicity
| White | 90.2% |
| Black or African American | 2.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.7% |
| Two or More Races | 0.1% |
Economy & Income
$106,030
Median Household Income
$46,957
Per Capita Income
0.8%
Poverty Rate
2.5%
Unemployment Rate
Housing
$231,900
Median Home Value
$1,157
Median Rent
79.6%
Owner-Occupied
Education
97.4%
High School+
49.4%
Bachelor's+
Commute
0.2%
Drive Alone
77.6%
Public Transit
14.1%
Work From Home
23.4 min
Avg Commute
Community Profile
20.7%
Foreign Born
94.7%
Non-English at Home
5.3%
Veterans
7.8%
With Disability
96.0%
Health Insurance
98.4%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 31.7% |
| Public Administration | 19.5% |
| Finance, Insurance & Real Estate | 8.2% |
| Information | 7.6% |
| Construction | 7.1% |
| Arts, Entertainment & Food Services | 4.6% |
| Manufacturing | 3.7% |
| Retail Trade | 2.7% |
| Education, Health Care & Social Services | 2.5% |
| Agriculture & Mining | 0.9% |
| Transportation & Warehousing | 0.7% |
Largest cities in Illinois
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City rankings
Frequently Asked Questions
Chatham, Illinois has a population of 14,740 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 166th-largest city in Illinois.
The median household income in Chatham, Illinois is $106,030, with 0.8% of residents living below the federal poverty level.
The median home value in Chatham, Illinois is $231,900, with median monthly rent at $1,157 and a homeownership rate of 79.6%.
The median age in Chatham, Illinois is 35.1 years. The population is 45.0% male and 55.0% female.
The population has grown 24.3% since 2010 (11,781 → 14,639).
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.