Frankfort Square, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Frankfort Square, Illinois had a total population of 9,560, the 230th largest community in Illinois, with a median household income of $126,897, which is 52% higher than the state average. The poverty rate is 6.4%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 52% above the state average — one of the wealthiest communities in Illinois.
- Housing is very affordable with a home-value-to-income ratio of just 2.4x.
Frankfort Square Quick Facts
How Frankfort Square Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 9,777 | 9,560 | -2.2% |
| Median household income | $126,953 | $126,897 | -0.0% |
| Median home value | $282,100 | $305,800 | +8.4% |
How Frankfort Square Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Frankfort Square Rankings in Illinois
Explore Illinois Rankings
Other Cities in Will County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Joliet | 150,445 | $92,201 | 11.1% | $265,800 |
| Plainfield | 46,708 | $144,000 | 4.2% | $431,400 |
| Romeoville | 41,152 | $106,325 | 5.5% | $257,100 |
| Oswego | 36,375 | $123,792 | 2.6% | $344,500 |
| New Lenox | 28,006 | $140,865 | 1.5% | $399,900 |
| Lockport | 26,409 | $111,981 | 6.8% | $316,000 |
| Crest Hill | 20,628 | $73,033 | 12.0% | $232,900 |
| Mokena | 20,021 | $123,889 | 4.5% | $401,400 |
| Shorewood | 18,343 | $122,105 | 5.2% | $337,800 |
| Channahon | 13,927 | $119,494 | 5.9% | $327,900 |
Cities Similar to Frankfort Square
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Flossmoor | 9,391 | $133,663 | $344,800 | 64.4% | 5.5% |
| Sugar Grove | 9,240 | $121,207 | $401,900 | 45.9% | 4.7% |
| Itasca | 9,355 | $114,294 | $390,800 | 52.9% | 2.0% |
| Mahomet | 10,049 | $118,586 | $299,100 | 54.2% | 3.8% |
| Winfield | 10,095 | $135,795 | $386,300 | 59.7% | 3.2% |
Population Overview
Frankfort Square is a small city located in Illinois, within Will County. The total population is 9,560. It ranks as the 230th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Frankfort Square is 42.3 years. This is 8% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Frankfort Square is $126,897. This is 52% higher than the state median of $83,390. It is also 57% higher than the national median of $80,734. The poverty rate stands at 6.4%. This is 45% lower than the state poverty rate of 11.8%. The unemployment rate is 7.4%. This is 27% higher than the state rate of 5.8%. The median home value is $305,800. Housing costs are 16% higher than the state median of $263,300. With a home-value-to-income ratio of just 2.4x, Frankfort Square is one of the most affordable housing markets in the area. 95.2% of occupied housing units are owner-occupied. This homeownership rate is 42% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Frankfort Square is White (non-Hispanic), making up 68.7% of the population. Hispanic or Latino residents account for 11.5%. The Black or African American population (5.5%) is well below the state average of 13.3%. The Asian population (2.7%) is well below the state average of 5.9%.
Education
32.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 13% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.4%.
Data Sources & Methodology
All demographic data for Frankfort Square, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
Free data download: Get all Illinois city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Frankfort Square, Illinois?
Frankfort Square, Illinois has a population of 9,560 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Frankfort Square, IL?
The median household income in Frankfort Square is $126,897, which is 57% higher than the national median of $80,734.
What is the poverty rate in Frankfort Square, IL?
The poverty rate in Frankfort Square is 6.4%. This means approximately 615 residents live below the federal poverty line.
What is the racial makeup of Frankfort Square, Illinois?
Frankfort Square's population is 68.7% White, 5.5% Black, 11.5% Hispanic/Latino, and 2.7% Asian.
What is the median home value in Frankfort Square, IL?
The median home value in Frankfort Square is $305,800. The home-value-to-income ratio is 2.4x.
How educated is Frankfort Square, Illinois?
32.9% of adults (25+) in Frankfort Square hold a bachelor's degree or higher, and 12.0% hold a graduate or professional degree.