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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

ZIP Codes for City of Ontario, CA

Need a ZIP Code for Ontario, CA? Please enter an address.

Area Code(s):909, 840, 951
Timezone(s):Pacific (GMT -08:00)
City Population:163,924 (More Details)
CBSA:Riverside-San Bernardino-Ontario, CA
Congressional District(s):35, 39
Land Area:20,057 square miles (county)
Water Area:48 square miles (county)

5 ZIP Codes

Ontario, CA ZIP Code Boundaries

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Ontario, CA Covers 5 ZIP Codes

ZIP CodeTypePopulation% of PopulationAliases
91710Standard80,35832.51%MONTCLAIR, ONTARIO

Ontario, CA Demographic Information *

Total population**163,924
Male population81,563
Female population82,361
Median age (years)29.9
White Population83,683
Black Population10,561
Indian Population1,686
Asian Population8,453
Hawaiian Population514
Hispanic Population113,085
Median age (Male)29
Median age (Female)30.8
Total households44,931
Family households (families)35,595
Average household size3.63
Average family size3.98
Total housing units47,449
* Demographic data is based on 2010 Census for the City of ONTARIO.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],