ZIP Code 94507

94507 is one of California's ZIP codes, delivering to addresses in Alamo, Contra Costa County.

City: Alamo
County: Contra Costa County
State: California
Prefix: 945xx

Where this code sits

94507 is part of the 945xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Alamo.

Alamo California ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 94507 delivers to without sharing its boundary.

ZIP codes nearest 94507

The ZIP codes whose reference points sit closest to 94507.
ZIP code	Distance	Delivers to
ZIP code 94595	3.0 mi	Walnut Creek, CA
ZIP code 94528	3.2 mi	Diablo, CA
ZIP code 94596	4.0 mi	Walnut Creek, CA
ZIP code 94526	4.1 mi	Danville, CA
ZIP code 94598	4.5 mi	Walnut Creek, CA
ZIP code 94597	5.2 mi	Walnut Creek, CA
ZIP code 94556	5.6 mi	Moraga, CA
ZIP code 94549	5.7 mi	Lafayette, 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 94507, plotted from its record coordinates.

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

Scope ZIP code 94507. 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.