ZIP codes in Ontario, California
Ontario has 4 ZIP codes in this directory. Each ZIP is listed with its county, population and time zone.
| ZIP | County | Population | Time zone |
|---|---|---|---|
| 91758 | San Bernardino | 171,214 | America/Los_Angeles |
| 91761 | San Bernardino | 171,214 | America/Los_Angeles |
| 91762 | San Bernardino | 171,214 | America/Los_Angeles |
| 91764 | San Bernardino | 171,214 | America/Los_Angeles |
About Ontario ZIP codes
ZIP codes in Ontario are part of the USPS delivery network for California. The codes above are ordered numerically; each links to a page with coordinates, nearby ZIPs and more detail. Population shown is the estimated population of the city: 171,214.