Flat Rock Flag

Flat Rock

County:
Seneca County
County Seat:
No
Area (mi²):
0.212
State:
Ohio

Flat Rock is a CDP located in Seneca County, Ohio. Flat Rock has a 2026 population of 361. Flat Rock is currently growing at a rate of 2.27% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median age in Flat Rock is 40 years: 33.5 years for males, and 56.4 years for females. For every 100 females there are 167.7 males.

361
Total Population
1,700
Density (mi²)
8 2.27%
Growth

Flat Rock Population

Flat Rock Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202636182.27%
202535382.32%

Median Age

Overall: 40 years
Female: 56.4 years
Male: 33.5 years

Flat Rock Adults

There are 268 adults, (8 of whom are seniors) in Flat Rock.

Sex Ratio

Female: 127 (37.4%)
Male: 213 (62.6%)

Demographics

The racial composition of Flat Rock includes 78.53% White, 6.18% other race, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White26778.53%
Two or more races4412.94%
Other race216.18%
Black or African American82.35%
Race
Population ↓
Percentage (of total)
Other race216.18%
White10.29%
Race
Population ↓
Percentage (of total)
White26678.24%
Two or more races4412.94%
Black or African American82.35%

Flat Rock Marital Status

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)