ZIP Code 94030

94030 is one of California's ZIP codes, delivering to addresses in Millbrae, San Mateo County.

City: Millbrae
County: San Mateo County
State: California
Prefix: 940xx

Where this code sits

94030 is part of the 940xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Millbrae.

Millbrae California ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 94030 delivers to without sharing its boundary.

650 Area code 650

ZIP codes nearest 94030

The ZIP codes whose reference points sit closest to 94030.
ZIP code	Distance	Delivers to
ZIP code 94128	1.5 mi	San Francisco, CA
ZIP code 94066	2.2 mi	San Bruno, CA
ZIP code 94011	2.3 mi	Burlingame, CA
ZIP code 94010	3.0 mi	Burlingame, CA
ZIP code 94083	3.8 mi	South San Francisco, CA
ZIP code 94080	4.1 mi	South San Francisco, CA
ZIP code 94044	4.6 mi	Pacifica, CA
ZIP code 94401	4.7 mi	San Mateo, 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 94030, plotted from its record coordinates.

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

Scope ZIP code 94030. 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.