Mount Wilson ZIP code, California
The ZIP code for Mount Wilson, CA is 91023, and its area code is 626.
- USPS city name
- 1 ZIP code
- Area code
- 626
- County
- Los Angeles County
- State
- California
NANPA lists no telephone rate centre for Mount Wilson itself, so these are the area codes of the nearest one, Sierra Madre (3.7 miles). A town on an area-code boundary can differ from its neighbour.
ZIP codes addressed as Mount Wilson
| ZIP | City | Type |
|---|---|---|
91023 | Mount Wilson , CA | No street area |
Towns near Mount Wilson
| Town | Population | Distance |
|---|---|---|
| Sierra Madre | 10,940 | 4.1 mi |
| Altadena | 41,705 | 4.6 mi |
| Pasadena | 136,969 | 6.1 mi |
| East Pasadena | 5,479 | 6.2 mi |
| Monrovia | 37,571 | 6.3 mi |
| Arcadia | 55,170 | 6.7 mi |
| San Marino | 12,216 | 7.6 mi |
| East San Gabriel | 23,410 | 7.7 mi |
| La Cañada Flintridge | 19,935 | 7.7 mi |
| Duarte | 22,184 | 8.0 mi |
| South Monrovia Island | 6,830 | 8.2 mi |
| Mayflower Village | 4,950 | 8.3 mi |
| Temple City | 35,430 | 8.6 mi |
| North El Monte | 4,086 | 8.9 mi |
More nearby: every ZIP code in Los Angeles County · California ZIP codes
Cite this page
zipcodes.pro. “Mount Wilson, CA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ca/mount-wilson
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