ZIP Code 94942

94942 is one of California's ZIP codes, delivering to addresses in Mill Valley, Marin County.

City: Mill Valley
County: Marin County
State: California
Prefix: 949xx

Where this code sits

94942 is part of the 949xx range, the group of codes handled by one mail processing centre. Mill Valley is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Mill Valley page.

Mill Valley California ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 94942 delivers to without sharing its boundary.

ZIP codes nearest 94942

The ZIP codes whose reference points sit closest to 94942.
ZIP code	Distance	Delivers to
ZIP code 94941	0.9 mi	Mill Valley, CA
ZIP code 94976	1.7 mi	Corte Madera, CA
ZIP code 94977	2.0 mi	Larkspur, CA
ZIP code 94925	2.1 mi	Corte Madera, CA
ZIP code 94939	2.2 mi	Larkspur, CA
ZIP code 94904	2.9 mi	Greenbrae, CA
ZIP code 94914	3.3 mi	Kentfield, CA
ZIP code 94957	3.9 mi	Ross, 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 94942, plotted from its record coordinates.

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

Scope ZIP code 94942. 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.