| Mt Baldy, California | |
|---|---|
| — Unincorporated community — | |
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Mt Baldy, California
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| Coordinates: | |
| Country | United States |
| State | California |
| County | San Bernardino |
| Elevation | 4,193 ft (1,278 m) |
| Time zone | Pacific (PST) (UTC-8) |
| • Summer (DST) | PDT (UTC-7) |
| ZIP code | 91759 |
| Area code(s) | 909 |
| GNIS feature ID | 1660300[1] |
Mt Baldy is an unincorporated community in San Bernardino County, California, United States. Mt Baldy is 12 miles (19 km) north of Ontario. Mt Baldy has a post office with ZIP code 91759.[2] The community was established as Camp Baynham in 1906; it changed its name to Camp Baldy in 1910 and became Mt Baldy in 1951. Its post office was established in 1913.[3]