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
Frankfort covers 15.6 sq mi of land at 1308 people per square mile.
About Frankfort, IL
Frankfort is a city in Illinois with a population of 20,417. It ranks #120 among cities in Illinois by population. The median age is 41.8, older than the national median. The population is 51.2% male and 48.8% female.
The median household income in Frankfort is $153,714, above the US median of $74,580. 2.6% of residents live below the federal poverty level. Home values sit at a median of $461,600, with monthly rent averaging $2,175. The homeownership rate of 94.7% is higher than the national rate of 64.8%.
Educational attainment in Frankfort reflects 59.2% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 19.4% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 33.1 minutes each way.
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% |
Largest cities in Illinois
Largest counties in Illinois
Part of Illinois
Metro areas in Illinois
City rankings
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).
More from Illinois
Population 2,707,648
Population 179,867
Population 149,785
Population 149,424
Population 147,649
Full rankings of Illinois cities by population
Statewide data for Illinois
Population, race, income, age, and trends across Illinois
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.