Mamaroneck New York ZIP Codes
Mamaroneck holds a single ZIP code.
Every ZIP code in Mamaroneck
| ZIP code | County |
|---|---|
| 10543 | Westchester 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Mamaroneck codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Mamaroneck. 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 Mamaroneck ZIP code begins 105. Those first three digits identify the sectional center facility that processes mail for this part of New York. Statewide that range covers 66 ZIP codes, so Mamaroneck accounts for 2% of it.
Every New York ZIP prefix and the region it covers →
Area codes covering Mamaroneck
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 Mamaroneck occupies.
Mamaroneck New York area codes in full →
Where Mamaroneck's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Mamaroneck
| City | Distance | ZIP codes |
|---|---|---|
| Larchmont New York ZIP codes | 1.5 mi | 1 ZIP code |
| Rye New York ZIP codes | 2.2 mi | 1 ZIP code |
| New Rochelle New York ZIP codes | 2.9 mi | 4 ZIP codes |
| Pelham New York ZIP codes | 4.6 mi | 1 ZIP code |
| Scarsdale New York ZIP codes | 4.8 mi | 1 ZIP code |
| Bronxville New York ZIP codes | 5.2 mi | 1 ZIP code |
| Glen Cove New York ZIP codes | 5.6 mi | 1 ZIP code |
| Mount Vernon New York ZIP codes | 5.6 mi | 4 ZIP codes |
Straight-line distance between place reference points, not driving distance.