Millbrae California ZIP Codes
Millbrae holds a single ZIP code.
Every ZIP code in Millbrae
| ZIP code | County |
|---|---|
| 94030 | San Mateo County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Millbrae codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Millbrae. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Millbrae ZIP code begins 940. Those first three digits identify the sectional center facility that processes mail for this part of California. Statewide that range covers 45 ZIP codes, so Millbrae accounts for 2% of it.
Every California ZIP prefix and the region it covers →
Area codes covering Millbrae
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Millbrae occupies.
Millbrae California area codes in full →
Where Millbrae's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Millbrae
| City | Distance | ZIP codes |
|---|---|---|
| Burlingame California ZIP codes | 2.2 mi | 2 ZIP codes |
| San Bruno California ZIP codes | 2.4 mi | 1 ZIP code |
| South San Francisco California ZIP codes | 4.1 mi | 2 ZIP codes |
| Pacifica California ZIP codes | 4.2 mi | 1 ZIP code |
| Brisbane California ZIP codes | 5.4 mi | 1 ZIP code |
| San Mateo California ZIP codes | 5.7 mi | 5 ZIP codes |
| Daly City California ZIP codes | 7.9 mi | 4 ZIP codes |
| Belmont California ZIP codes | 8.3 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.