|Elevation||105 ft (32 m)|
|Time zone||UTC-8 (Pacific (PST))|
|• Summer (DST)||UTC-7 (PDT)|
|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.
- U.S. Geological Survey Geographic Names Information System: Vernalis, California
- ZIP Code Lookup
- Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Quill Driver Books. p. 842. ISBN 1-884995-14-4.
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