Ontario, CA ZIP Codes, Coordinates & Counties
Ontario, California has 3 ZIP codes in San Bernardino county. The approximate center of Ontario is 34.046, -117.613. Ontario has about 433,267 known street addresses.
ZIP codes in Ontario, CA
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 91761 | San Bernardino | 34.035 | -117.592 |
| 91762 | San Bernardino | 34.029 | -117.645 |
| 91764 | San Bernardino | 34.075 | -117.602 |
Counties Ontario spans
San Bernardino
Most common streets in Ontario
Philadelphia, G, Airport, Holt, Inland Empire, 6th, D, Grove, 5th, Cedar
Frequently asked questions
What ZIP codes are in Ontario, CA?
Ontario, California has 3 ZIP codes, ranging from 91761 to 91764. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Ontario, CA in?
Ontario is in San Bernardino county.
What are the latitude and longitude of Ontario, CA?
The approximate center of Ontario, California is latitude 34.046, longitude -117.613. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Ontario, CA have?
Ontario has 3 ZIP codes.
How many addresses are in Ontario, CA?
Ontario, California has about 433,267 known street addresses in the sthan.io US address database.
What are the most common streets in Ontario, CA?
Some of the most common street names in Ontario are Philadelphia, G, Airport, Holt, Inland Empire, 6th.
What cities are near Ontario, CA?
Cities near Ontario include Chino (5 mi), Montclair (5 mi), Mira Loma (6 mi), Upland (6 mi), Rancho Cucamonga (7 mi).
Cities near Ontario
Chino, CA (5 mi) Montclair, CA (5 mi) Mira Loma, CA (6 mi) Upland, CA (6 mi) Rancho Cucamonga, CA (7 mi) Claremont, CA (8 mi) Chino Hills, CA (9 mi) Norco, CA (9 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database