Nassau New York ZIP Codes
Nassau holds a single ZIP code.
Every ZIP code in Nassau
| ZIP code | County |
|---|---|
| 12123 | Rensselaer 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Nassau codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Nassau. 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 Nassau ZIP code begins 121. Those first three digits identify the sectional center facility that processes mail for this part of New York. Statewide that range covers 73 ZIP codes, so Nassau accounts for 1% of it.
Every New York ZIP prefix and the region it covers →
Area codes covering Nassau
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 Nassau occupies.
Nassau New York area codes in full →
Where Nassau's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Nassau
| City | Distance | ZIP codes |
|---|---|---|
| East Nassau New York ZIP codes | 5.7 mi | 1 ZIP code |
| Valatie New York ZIP codes | 7.8 mi | 1 ZIP code |
| Kinderhook New York ZIP codes | 9.5 mi | 1 ZIP code |
| Chatham New York ZIP codes | 11 mi | 1 ZIP code |
| Ravena New York ZIP codes | 11 mi | 1 ZIP code |
| Rensselaer New York ZIP codes | 11 mi | 1 ZIP code |
| Albany New York ZIP codes | 14 mi | 50 ZIP codes |
| Coxsackie New York ZIP codes | 15 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.