Frankfort, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Frankfort, Illinois is 20,417 as of the 2023 American Community Survey, making it the 120th-largest city in Illinois. The median household income is $153,714, the median home value is $461,600, and the median age is 41.8.
The population has grown 18.6% since 2010 (17,846 → 21,160).
20,417
Population
1308
People / sq mi
$153,714
Median Income
$461,600
Median Home Value
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Frankfort covers 15.6 sq mi of land at 1308 people per square mile.
About Frankfort, IL
Homeownership is the standout figure in Frankfort: 94.7% of homes are owner-occupied, higher than the national rate. Frankfort is a city in Illinois with a population of 20,417.
Income is a real outlier — the median household pulls in $153,714, putting Frankfort near the top of US cities. Poverty is relatively low for US cities at 2.6%, below the national 12.4%. Home values run above average at $461,600, with typical rent around $2,175.
College attainment is above the local norm at 59.2%, above the national 35.0%. A solid 19.4% of workers are based at home, above the national 14.0%, and the average commute runs about 33 minutes each way.
The ownership rate anchors the housing story in Frankfort, and tends to move with the age structure and home-value figures above.
Frankfort village Population History (2010-2024)
The city of Frankfort village had a population of 17,846 in 2010 and 21,160 in 2024, a 18.6% growth over 14 years. The peak was 21,160 in 2024. Average annual growth rate: 1.23%.
21,160
Population (2024)
17,846
Population (2010)
21,160
Peak (2024)
1.23%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 17,846 |
| 2011 | 17,945 |
| 2012 | 18,054 |
| 2013 | 18,187 |
| 2014 | 18,414 |
| 2015 | 18,635 |
| 2016 | 18,842 |
| 2017 | 18,976 |
| 2018 | 19,144 |
| 2019 | 19,373 |
| 2020 | 20,312 |
| 2021 | 20,519 |
| 2022 | 20,706 |
| 2023 | 20,973 |
| 2024 | 21,160 |
Race & Ethnicity
| White | 79.3% |
| Black or African American | 10.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.1% |
| Two or More Races | 0.0% |
Economy & Income
$153,714
Median Household Income
$59,421
Per Capita Income
2.6%
Poverty Rate
2.4%
Unemployment Rate
Housing
$461,600
Median Home Value
$2,175
Median Rent
94.7%
Owner-Occupied
Education
98.3%
High School+
59.2%
Bachelor's+
Commute
4.3%
Drive Alone
71.8%
Public Transit
19.4%
Work From Home
33.1 min
Avg Commute
Community Profile
15.9%
Foreign Born
88.8%
Non-English at Home
3.7%
Veterans
6.0%
With Disability
97.3%
Health Insurance
97.4%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 25.3% |
| Finance, Insurance & Real Estate | 13.5% |
| Information | 10.9% |
| Manufacturing | 9.1% |
| Education, Health Care & Social Services | 8.0% |
| Construction | 5.8% |
| Retail Trade | 4.9% |
| Public Administration | 4.5% |
| Arts, Entertainment & Food Services | 2.9% |
| Transportation & Warehousing | 1.9% |
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Frequently Asked Questions
Frankfort, Illinois has a population of 20,417 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 120th-largest city in Illinois.
The median household income in Frankfort, Illinois is $153,714, with 2.6% of residents living below the federal poverty level.
The median home value in Frankfort, Illinois is $461,600, with median monthly rent at $2,175 and a homeownership rate of 94.7%.
The median age in Frankfort, Illinois is 41.8 years. The population is 51.2% male and 48.8% female.
The population has grown 18.6% since 2010 (17,846 → 21,160).
Where to stay in Frankfort
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.