Martinez California ZIP Codes
Martinez holds a single ZIP code.
Every ZIP code in Martinez
| ZIP code | County |
|---|---|
| 94553 | Contra Costa 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Martinez codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Martinez. 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 Martinez ZIP code begins 945. Those first three digits identify the sectional center facility that processes mail for this part of California. Statewide that range covers 93 ZIP codes, so Martinez accounts for 1% of it.
Every California ZIP prefix and the region it covers →
Area codes covering Martinez
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 Martinez occupies.
Martinez California area codes in full →
Where Martinez's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Martinez
| City | Distance | ZIP codes |
|---|---|---|
| Pleasant Hill California ZIP codes | 3.7 mi | 1 ZIP code |
| Benicia California ZIP codes | 5.6 mi | 1 ZIP code |
| Concord California ZIP codes | 6.4 mi | 8 ZIP codes |
| Lafayette California ZIP codes | 7.4 mi | 1 ZIP code |
| Walnut Creek California ZIP codes | 7.7 mi | 4 ZIP codes |
| Orinda California ZIP codes | 8.6 mi | 1 ZIP code |
| Hercules California ZIP codes | 9.6 mi | 1 ZIP code |
| Moraga California ZIP codes | 11 mi | 3 ZIP codes |
Straight-line distance between place reference points, not driving distance.