Ontario, CA Profile: Facts, Map & Data


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Ontario, California - Basic Facts

The City of Ontario had a population of 172,766 as of July 1, 2017. Ontario ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in California. See peer rankings below.

The primary coordinate point for Ontario is located at latitude 34.0394 and longitude -117.6042 in San Bernardino County. The formal boundaries for the City of Ontario (see map below) encompass a land area of 49.93 sq. miles and a water area of 0.06 sq. miles. San Bernardino County is in the Pacific time zone (GMT -8). The elevation is 1,004 feet.

The City of Ontario (GNIS ID: 2411323) 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.

California is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Ontario is located within Ontario CCD of San Bernardino County.

Beneath the boundary map are tables with Ontario population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


City of Ontario, CA Boundary Map

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Boundary Maps: Ontario CCD | San Bernardino County | California Counties

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Ontario, CA Data & Demographics (As of July 1, 2017)


Total Population 172,766
Daytime Population: Workers 114,310
Daytime Population: Residents 94,396
Total Daytime Population (TDP) 208,706
Ratio TDP/Total Population1 1.21
Population in Households 172,007
Population in Familes 149,002
Population in Group Qrtrs 759
Population Density2 3,460
Diversity Index3 85


Median Household Income $57,238
Average Household Income $72,488
Per Capita Income $20,013


Total Housing Units 49,631 (100%)
Owner Occupied HU 25,417 (51.2%)
Renter Occupied HU 21,825 (44.0%)
Vacant Housing Units 2,389 ( 4.8%)
Median Home Value $323,656
Average Home Value $346,661


Total Households 47,242
Average Household Size 3.64
Family Households 37,330
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 0.73% 0.71%
Households 0.69% 0.67%
Families 0.66% 0.64%
Median Household Income   1.56%
Per Capita Income   2.4%

Ontario, CA - Peer Comparisons by Rank and Percentile

The table below compares Ontario to the other 1,516 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2017 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 # 29 98th
Population Density # 391 74th
Diversity Index # 168 89th
Median Household Income # 728 52nd
Per Capita Income # 1169 23rd

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

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