Caspar, California Zip Codes
📍 Caspar is in Mendocino County, California with 1 zip code; the most populous is 95420.
Caspar is a USPS city name in Mendocino County, California with a Census population of approximately 351 across its ZIP codes. Mendocino County as a whole has 28 ZIP codes in this directory. Below you'll find every zip code serving Caspar 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 Caspar Zip Codes
Caspar at a Glance
Caspar has 1 ZIP code in this directory: 1 standard delivery ZIP. The 1 ZIP with published Census housing data cover 351 residents, the largest being 95420 with 351 people.
The median ZIP in Caspar has a household income of $235,959 and a home value of $1,099,700, a price-to-income ratio of 4.7, below the 6.7 California ZIP median.
95% of households in the typical Caspar ZIP own their home (statewide ZIP median 64%). 93% of adults hold a bachelor's degree, far above the 31% statewide median. The median poverty rate is 2.6%, far below the 10.8% statewide ZIP median. Overall density is about 48 residents per square mile across 7 square miles of ZIP land area.
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.
Caspar Zip Code Map
Interactive map of Caspar, California zip codes. Click any marker for details.