Flat Rock, OH Profile: Facts, Map & Data


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Flat Rock, Ohio - Basic Facts

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The Flat Rock Census Designated Place had a population of 210 as of July 1, 2018. Flat Rock ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Ohio. See peer rankings below.

The primary coordinate point for Flat Rock is located at latitude 41.2355 and longitude -82.8592 in Seneca County. The formal boundaries for the Flat Rock Census Designated Place (see map below) encompass a land area of 0.21 sq. miles and a water area of 0 sq. miles. Seneca County is in the Eastern time zone (GMT -5). The elevation is 797 feet.

The Flat Rock Census Designated Place (GNIS ID: 2628891) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Flat Rock Census Designated Place is located within Township of Thompson, a minor civil division (MCD) of Seneca County.

Beneath the boundary map are tables with Flat Rock population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

Alternate Unofficial Names for Flat Rock: Flatrock, Lewisville.

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Flat Rock Census Designated Place, OH Boundary Map

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Boundary Maps: Township of Thompson | Seneca County | Ohio Counties

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Flat Rock, OH Data & Demographics (As of July 1, 2018)


Total Population 210
Population in Households 200
Population in Familes 169
Population in Group Qrtrs 10
Population Density2 1,004
Diversity Index3 6


Median Household Income $63,049
Average Household Income $71,564
Per Capita Income $26,356


Total Housing Units 81 (100%)
Owner Occupied HU 53 (65.4%)
Renter Occupied HU 13 (16.0%)
Vacant Housing Units 15 (18.5%)
Median Home Value $117,000
Average Home Value $158,962


Total Households 66
Average Household Size 3.03
Family Households 48
Average Family Size 4
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population -1.25% -0.68%
Households -1.21% -0.61%
Families -1.42% -0.85%
Median Household Income   2.43%
Per Capita Income   2.53%

Flat Rock, OH - Peer Comparisons by Rank and Percentile

The table below compares Flat Rock to the other 1,215 incorporated cities, towns and CDPs in Ohio by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 1074 12th
Population Density # 734 40th
Diversity Index # 1074 12th
Median Household Income # 287 76th
Per Capita Income # 542 55th

Additional comparisons and rankings can be made with a VERY EASY TO USE Ohio Census Data Comparison Tool.

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