ZIP Code 95421

95421 is one of California's ZIP codes, delivering to addresses in Cazadero, Sonoma County.

City: Cazadero
County: Sonoma County
State: California
Prefix: 954xx

Where this code sits

95421 is part of the 954xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Cazadero.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 95421 delivers to without sharing its boundary.

ZIP codes nearest 95421

The ZIP codes whose reference points sit closest to 95421.
ZIP code	Distance	Delivers to
ZIP code 95450	6.4 mi	Jenner, CA
ZIP code 95412	11 mi	Annapolis, CA
ZIP code 95480	12 mi	Stewarts Point, CA
ZIP code 95430	12 mi	Duncans Mills, CA
ZIP code 95446	12 mi	Guerneville, CA
ZIP code 95486	12 mi	Villa Grande, CA
ZIP code 95462	13 mi	Monte Rio, CA
ZIP code 95471	13 mi	Rio Nido, 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 95421, plotted from its record coordinates.

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

Scope ZIP code 95421. 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.