Washington, California Zip Codes
📍 Washington is in Nevada County, California with 1 zip code; the most populous is 95986.
Washington is a USPS city name in Nevada County, California with a Census population of approximately 104 across its ZIP codes. Nevada County as a whole has 13 ZIP codes in this directory. Below you'll find every zip code serving Washington with population, income and home value, a map, and the city's affordability profile.
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
All Washington Zip Codes
Washington at a Glance
Washington has 1 ZIP code in this directory: 1 standard delivery ZIP.
Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.
Washington Zip Code Map
Interactive map of Washington, California zip codes. Click any marker for details.