Piedmont California ZIP Codes
Piedmont holds a single ZIP code.
Every ZIP code in Piedmont
| ZIP code | County |
|---|---|
| 94620 | Alameda 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Piedmont codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Piedmont. 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 Piedmont ZIP code begins 946. Those first three digits identify the sectional center facility that processes mail for this part of California. Statewide that range covers 29 ZIP codes, so Piedmont accounts for 3% of it.
Every California ZIP prefix and the region it covers →
Area codes covering Piedmont
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Piedmont occupies.
Piedmont California area codes in full →
Where Piedmont's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Piedmont
| City | Distance | ZIP codes |
|---|---|---|
| Oakland California ZIP codes | 3.6 mi | 26 ZIP codes |
| Emeryville California ZIP codes | 4.1 mi | 2 ZIP codes |
| Berkeley California ZIP codes | 4.8 mi | 11 ZIP codes |
| Orinda California ZIP codes | 5.3 mi | 1 ZIP code |
| Alameda California ZIP codes | 5.8 mi | 2 ZIP codes |
| Moraga California ZIP codes | 6.0 mi | 3 ZIP codes |
| Albany California ZIP codes | 6.7 mi | 1 ZIP code |
| Lafayette California ZIP codes | 7.7 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.