| Vernalis, California | |
|---|---|
| Unincorporated community | |
| Coordinates: 37°37′51″N 121°17′14″W / 37.63083°N 121.28722°WCoordinates: 37°37′51″N 121°17′14″W / 37.63083°N 121.28722°W | |
| Country | United States |
| State | California |
| County | San Joaquin |
| Elevation | 105 ft (32 m) |
| Time zone | Pacific (PST) (UTC-8) |
| • Summer (DST) | PDT (UTC-7) |
| ZIP code | 95385 |
| Area code(s) | 209 |
| GNIS feature ID | 252823 |
Vernalis is an unincorporated community in San Joaquin County, California, United States. Vernalis is located on California State Route 33 10.5 miles (16.9 km) southeast of Tracy. Vernalis has a post office with ZIP code 95385. The first post office in the area opened under the name of San Joaquin in 1851; that post office closed in 1852, reopened in 1874, and was moved 3 miles (4.8 km) southwest in 1888, after which its name was changed to Vernalis.