ZIP Code 91942: La Mesa, CA
County: San Diego County
Coordinates: 32.78350, -117.01890
ZIP Type: Standard
Time Zone: Pacific Time (PT)
Get a reliable snapshot of the La Mesa, CA postal area 91942. This page summarizes county, coordinates, and local facts to help with services and location research.
| Primary City | La Mesa |
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| ZIP Code | 91942 |
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| County | San Diego County |
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| State | CA |
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| Latitude / Longitude | 32.78350, -117.01890 |
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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 91942 (not an exact boundary).
Geographic & Administrative Context
Coordinates for 91942 are listed as 32.78350 / -117.01890, useful for GPS and service checks in and around La Mesa, CA.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 91942 for mail delivery and general location reference in
San Diego County,
CA.
This ZIP may extend beyond the city core into nearby communities within San Diego County.
Related ZIP Codes (Nearby)
Explore other postal codes near La Mesa within CA.
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Frequently Asked Questions
What is the primary city for ZIP code 91942?
The primary city for this ZIP code is La Mesa, located in CA.
In which county is 91942 located?
ZIP code 91942 is situated within San Diego County, CA.
What are the coordinates for 91942?
The approximate center point is 32.78350 (Latitude) and -117.01890 (Longitude).
Is ZIP code 91942 active?
This page lists ZIP 91942 as Listed based on the latest refresh date shown above.
Does ZIP 91942 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