ZIP Code 94904

94904 is one of California's ZIP codes, delivering to addresses in Greenbrae, Marin County.

City: Greenbrae
County: Marin County
State: California
Prefix: 949xx

Where this code sits

94904 is part of the 949xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Greenbrae.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 94904 delivers to without sharing its boundary.

ZIP codes nearest 94904

The ZIP codes whose reference points sit closest to 94904.
ZIP code	Distance	Delivers to
ZIP code 94939	0.8 mi	Larkspur, CA
ZIP code 94977	1.0 mi	Larkspur, CA
ZIP code 94914	1.2 mi	Kentfield, CA
ZIP code 94957	1.4 mi	Ross, CA
ZIP code 94976	1.6 mi	Corte Madera, CA
ZIP code 94912	1.8 mi	San Rafael, CA
ZIP code 94913	1.8 mi	San Rafael, CA
ZIP code 94901	2.0 mi	San Rafael, 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 94904, plotted from its record coordinates.

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

Scope ZIP code 94904. 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.