Napa County, California Zip Codes
📍 Napa County has 11 zip codes with a population of 130,757.
Napa County is located in California with a land area of 691 square miles. The county seat is Napa. Below you'll find all 11 zip codes in Napa County with population, income and home value, the county's affordability profile, and links to its 8 city pages.
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 Napa County Zip Codes
| ZIP Code | City | Details |
|---|---|---|
| 94503 | American Canyon | View → |
| 94508 | Angwin | View → |
| 94558 | Napa | View → |
| 94559 | Napa | View → |
| 94562 | Oakville | View → |
| 94567 | Pope Valley | View → |
| 94573 | Rutherford | View → |
| 94574 | Saint Helena | View → |
| 94576 | Deer Park | View → |
| 94581 | Napa | View → |
| 94599 | Yountville | View → |
Napa County at a Glance
Napa County has 11 ZIP codes in this directory: 9 standard delivery ZIPs and 2 PO Box or unique ZIPs that carry no resident population in Census data. The 8 ZIPs with published Census housing data cover 130,757 residents, the largest being 94558 (Napa) with 65,084 people.
The median ZIP in Napa County has a household income of $111,717 and a home value of $783,400, a price-to-income ratio of 7.1, above the 6.7 California ZIP median. Affordability ranges from 94503 in American Canyon at a ratio of 5.2 to 94574 in Saint Helena, where the median home is $1,602,900. The highest median income is in 94576 (Deer Park) at $158,125. Median rent across these ZIPs is $2,010 a month.
67% of households in the typical Napa County ZIP own their home (statewide ZIP median 64%). 36% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 8.7%, below the 10.8% statewide ZIP median. Overall density is about 189 residents per square mile across 691 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.
Napa County Zip Code Map
Interactive map of Napa County, California zip codes.