Flat Rock, Ohio Demographics & Population 2026
During the 2020–2024 ACS period, Flat Rock, Ohio had a total population of 340, the 983rd largest community in Ohio. The poverty rate is 24.7%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Unemployment rate of 40.7% is notably above the national average.
Flat Rock Quick Facts
How Flat Rock 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 | 337 | 340 | +0.9% |
| Median home value | $123,400 | $92,500 | -25.0% |
How Flat Rock 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
A less diverse community where one racial or ethnic group represents a large majority.
State average: 41 | National average: 61
Education
Educational Attainment (Adults 25+)
Flat Rock Rankings in Ohio
Explore Ohio Rankings
Other Cities in Seneca County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Tiffin | 17,818 | $56,198 | 14.8% | $142,200 |
| Attica | 755 | $69,063 | 10.2% | $113,800 |
| Bloomville | 721 | $69,000 | 17.0% | $96,800 |
| Bettsville | 562 | $65,417 | 14.7% | $99,900 |
| Republic | 456 | $63,125 | 10.3% | $85,000 |
| McCutchenville | 346 | $83,393 | 0.0% | $154,200 |
| New Riegel | 316 | $63,750 | 15.2% | $119,000 |
| Bascom | 298 | $90,592 | 0.0% | $145,500 |
| Kansas | 200 | $53,144 | 40.0% | $73,800 |
| Fort Seneca | 113 | $39,375 | 0.0% | $204,700 |
Cities Similar to Flat Rock
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| New Haven (Hamilton County) | 340 | N/A | $9,999 | 11.7% | 37.4% |
| West Manchester | 341 | $61,875 | $105,500 | 15.4% | 6.6% |
| Tontogany | 343 | $60,547 | $163,700 | 15.5% | 18.4% |
| Midland | 337 | $55,000 | $121,100 | 1.4% | 19.0% |
| Osgood | 337 | $100,625 | $227,500 | 20.0% | 3.3% |
A note before these figures: with a population of 340, Flat Rock's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Flat Rock is a small community located in Ohio, within Seneca County. The total population is 340. It ranks as the 983rd most populous out of 1,264 Census-designated places in Ohio.
Age Demographics
The median age in Flat Rock is 40.0 years. This is about the same as the state median of 39.7 years.
Economy, Income & Housing
The poverty rate stands at 24.7%. This is 86% higher than the state poverty rate of 13.3%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 40.7%. This is 754% higher than the state rate of 4.8%. The median home value is $92,500. Housing costs are 57% lower than the state median of $214,800. 93.6% of occupied housing units are owner-occupied. This homeownership rate is 39% higher than the state average of 67.2%.
Race & Ethnicity
The largest racial or ethnic group in Flat Rock is White (non-Hispanic), making up 78.2% of the population. Hispanic or Latino residents account for 6.5%. The Black or African American population (2.4%) is well below the state average of 12.0%.
Education
28.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 9% lower than the state rate of 31.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.9%.
Data Sources & Methodology
All demographic data for Flat Rock, Ohio 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 Ohio state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,264 Census-designated places in Ohio. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Flat Rock, Ohio?
Flat Rock, Ohio has a population of 340 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Flat Rock, OH?
The Census Bureau does not publish a reliable median household income estimate for Flat Rock — the community is too small for the ACS sample. The national median is $80,734.
What is the poverty rate in Flat Rock, OH?
The poverty rate in Flat Rock is 24.7%. This means approximately 75 residents live below the federal poverty line.
What is the racial makeup of Flat Rock, Ohio?
Flat Rock's population is 78.2% White, 2.4% Black, 6.5% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Flat Rock, OH?
The median home value in Flat Rock is $92,500.
How educated is Flat Rock, Ohio?
28.7% of adults (25+) in Flat Rock hold a bachelor's degree or higher, and 14.6% hold a graduate or professional degree.