Ontario, OH Profile: Facts & Data


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Ontario, Ohio - Basic Facts

The City of Ontario had a population of 6,325 as of July 1, 2018. Ontario ranks in the lower quartile for Population Density and the upper 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 Ontario is located at latitude 40.7595 and longitude -82.5902 in Richland County. The formal boundaries for the City of Ontario (see map below) encompass a land area of 11.08 sq. miles and a water area of 0.02 sq. miles. Richland County is in the Eastern time zone (GMT -5). The elevation is 1,355 feet.

The City of Ontario (GNIS ID: 2396070) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Ontario is located within Township of Springfield, a minor civil division (MCD) of Richland County.

Alternate Unofficial Names for Ontario: New Castle.

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  1. Ontario 2018 Demographic Data
  2. Growth Rates for Ontario (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Ohio Research Tools (Easy Tools & Current Data)
  3. Ohio Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


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


Total Population 6,325
Population in Households 6,148
Population in Familes 5,022
Population in Group Qrtrs 177
Population Density2 571
Diversity Index3 22


Median Household Income $52,359
Average Household Income $67,332
Per Capita Income $28,843


Total Housing Units 2,815 (100%)
Owner Occupied HU 1,834 (65.2%)
Renter Occupied HU 864 (30.7%)
Vacant Housing Units 117 ( 4.2%)
Median Home Value $134,821
Average Home Value $158,792


Total Households 2,698
Average Household Size 2.28
Family Households 1,791
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 0.19% -0.03%
Households 0.37% 0.09%
Families 0.3% -0.07%
Median Household Income   1.91%
Per Capita Income   3.03%

Ontario, OH - Peer Comparisons by Rank and Percentile

The table below compares Ontario 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 # 252 79th
Population Density # 987 19th
Diversity Index # 287 77th
Median Household Income # 637 48th
Per Capita Income # 381 69th

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

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Ohio Census Data Comparison Tool

Compare Ohio July 1, 2018 Data
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