ZIP Code 94581

94581 is one of California's ZIP codes, delivering to addresses in Napa, Napa County.

City: Napa
County: Napa County
State: California
Prefix: 945xx

Where this code sits

94581 is part of the 945xx range, the group of codes handled by one mail processing centre. Napa is served by 3 ZIP codes in total; the full list, with the county each falls in, is on the Napa page.

Napa California ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 94581 delivers to without sharing its boundary.

ZIP codes nearest 94581

The ZIP codes whose reference points sit closest to 94581.
ZIP code	Distance	Delivers to
ZIP code 94559	0.5 mi	Napa, CA
ZIP code 94599	8.3 mi	Yountville, CA
ZIP code 95487	8.4 mi	Vineburg, CA
ZIP code 94503	9.2 mi	American Canyon, CA
ZIP code 94534	9.2 mi	Fairfield, CA
ZIP code 94589	9.6 mi	Vallejo, CA
ZIP code 95476	10 mi	Sonoma, CA
ZIP code 95416	11 mi	Boyes Hot Springs, CA

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 94581, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 94581. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.