Saint Helena, California Zip Codes
📍 Saint Helena is in Napa County, California with 1 zip code; the most populous is 94574.
Saint Helena is a USPS city name in Napa County, California with a Census population of approximately 7,827 across its ZIP codes. Napa County as a whole has 11 ZIP codes in this directory. Below you'll find every zip code serving Saint Helena 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 Saint Helena Zip Codes
Saint Helena at a Glance
Saint Helena has 1 ZIP code in this directory: 1 standard delivery ZIP. The 1 ZIP with published Census housing data cover 7,827 residents, the largest being 94574 with 7,827 people.
The median ZIP in Saint Helena has a household income of $130,250 and a home value of $1,602,900, a price-to-income ratio of 12.3, far above the 6.7 California ZIP median. Median rent across these ZIPs is $1,877 a month.
68% of households in the typical Saint Helena ZIP own their home (statewide ZIP median 64%). 55% of adults hold a bachelor's degree, far above the 31% statewide median. The median poverty rate is 6.3%, below the 10.8% statewide ZIP median. Overall density is about 63 residents per square mile across 124 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.
Saint Helena Zip Code Map
Interactive map of Saint Helena, California zip codes. Click any marker for details.