Kelseyville, California Zip Codes
📍 Kelseyville is in Lake County, California with 1 zip code; the most populous is 95451.
Kelseyville is a USPS city name in Lake County, California with a Census population of approximately 12,957 across its ZIP codes. Lake County as a whole has 15 ZIP codes in this directory. Below you'll find every zip code serving Kelseyville 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 Kelseyville Zip Codes
Kelseyville at a Glance
Kelseyville has 1 ZIP code in this directory: 1 standard delivery ZIP. The 1 ZIP with published Census housing data cover 12,957 residents, the largest being 95451 with 12,957 people.
The median ZIP in Kelseyville has a household income of $61,904 and a home value of $305,700, a price-to-income ratio of 4.9, below the 6.7 California ZIP median. Median rent across these ZIPs is $1,311 a month.
72% of households in the typical Kelseyville ZIP own their home (statewide ZIP median 64%). 19% of adults hold a bachelor's degree, below the 31% statewide median. The median poverty rate is 9.6%, below the 10.8% statewide ZIP median. Overall density is about 139 residents per square mile across 93 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.
Kelseyville Zip Code Map
Interactive map of Kelseyville, California zip codes. Click any marker for details.