ZIP Code 91758: Ontario, CA
County: San Bernardino County
Coordinates: 34.06330, -117.65090
ZIP Type: Standard
Time Zone: Pacific Time (PT)
This profile provides an in-depth look at ZIP code 91758, serving Ontario in CA. It lies in San Bernardino County and supports delivery, planning, and address verification.
| Primary City | Ontario |
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| ZIP Code | 91758 |
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| County | San Bernardino County |
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| State | CA |
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| Latitude / Longitude | 34.06330, -117.65090 |
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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 91758 (not an exact boundary).
Geographic & Administrative Context
For mapping and verification, 91758 is commonly represented around 34.06330, -117.65090. 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 91758 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 91758?
The primary city for this ZIP code is Ontario, located in CA.
In which county is 91758 located?
ZIP code 91758 is situated within San Bernardino County, CA.
What are the coordinates for 91758?
The approximate center point is 34.06330 (Latitude) and -117.65090 (Longitude).
Is ZIP code 91758 active?
This page lists ZIP 91758 as Listed based on the latest refresh date shown above.
Does ZIP 91758 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