Ontario, California
Ontario is a city in San Bernardino County, California, with an estimated population of 182,457 in 2023. It sits at 34.0376, -117.6044 in the America/Los_Angeles time zone.
| Field | Value |
|---|---|
| Place name | Ontario |
| Type | city |
| State | California (CA) |
| County | San Bernardino County |
| Population (2023 est.) | 182,457 |
| Land area | 49.98 sq mi (129.46 km²) |
| Coordinates | 34.0376, -117.6044 |
| Time zone | America/Los_Angeles |
| ZIP codes | 91758, 91761, 91762, 91764 |
| Telephone area codes | 909 |
ZIP codes and area codes for Ontario
Ontario covers 4 ZIP codes: 91758, 91761, 91762, 91764. Telephone area codes serving the area: 909. Browse all ZIP codes in California for the full list.
Where is Ontario?
Ontario is located in California, in San Bernardino County. The coordinates above can be pasted directly into any map service. The nearest indexed places are listed below, which is a useful check when two states share a place name.
Nearby places
Chino 8 km · CAEastvale 9 km · CAMontclair 9 km · CAUpland 10 km · CARancho Cucamonga 11 km · CAJurupa Valley 13 km · CANorco 13 km · CAClaremont 14 km · CA
Other places in San Bernardino County
San Bernardino 223,728Fontana 215,465Rancho Cucamonga 174,405Victorville 138,869Rialto 103,391Hesperia 100,633Chino 93,114Upland 78,699Chino Hills 77,212Apple Valley 75,036
Frequently asked questions
What county is Ontario, CA in?
Ontario is in San Bernardino County, California.
What is the population of Ontario, CA?
The 2023 Census Bureau estimate is 182,457.
What time zone is Ontario in?
Ontario is in the America/Los_Angeles time zone.