ZIP Code 91761: Ontario, CA
County: San Bernardino County
Coordinates: 34.03160, -117.61870
ZIP Type: Standard
Time Zone: Pacific Time (PT)
Explore detailed information for ZIP code 91761 in Ontario, CA. We include verified county details for San Bernardino County plus key geographic references used for mapping and logistics.
| Primary City | Ontario |
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| ZIP Code | 91761 |
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| County | San Bernardino County |
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| State | CA |
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| Latitude / Longitude | 34.03160, -117.61870 |
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| ZIP Type | Standard |
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| Time Zone | Pacific Time (PT) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 91761 (not an exact boundary).
Geographic & Administrative Context
For mapping and verification, 91761 is commonly represented around 34.03160, -117.61870. These coordinates help identify the general area within San Bernardino County, CA.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 91761 for mail delivery and general location reference in
San Bernardino County,
CA.
This ZIP may extend beyond the city core into nearby communities within San Bernardino County.
Related ZIP Codes (Nearby)
Explore other postal codes near Ontario within CA.
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Frequently Asked Questions
What is the primary city for ZIP code 91761?
The primary city for this ZIP code is Ontario, located in CA.
In which county is 91761 located?
ZIP code 91761 is situated within San Bernardino County, CA.
What are the coordinates for 91761?
The approximate center point is 34.03160 (Latitude) and -117.61870 (Longitude).
Is ZIP code 91761 active?
This page lists ZIP 91761 as Listed based on the latest refresh date shown above.
Does ZIP 91761 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08