Watertown New York ZIP Codes
Watertown holds 2 ZIP codes, all inside one county and one postal prefix.
Every ZIP code in Watertown
| ZIP code | County |
|---|---|
| 13601 | Jefferson County |
| 13603 | Jefferson 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Watertown codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Watertown. 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 Watertown ZIP code begins 136. Those first three digits identify the sectional center facility that processes mail for this part of New York. Statewide that range covers 88 ZIP codes, so Watertown accounts for 2% of it.
Every New York ZIP prefix and the region it covers →
Area codes covering Watertown
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 Watertown occupies.
Watertown New York area codes in full →
Where Watertown's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Watertown
| City | Distance | ZIP codes |
|---|---|---|
| Brownville New York ZIP codes | 4.3 mi | 1 ZIP code |
| Black River New York ZIP codes | 6.2 mi | 1 ZIP code |
| Dexter New York ZIP codes | 7.1 mi | 1 ZIP code |
| Evans Mills New York ZIP codes | 9.4 mi | 1 ZIP code |
| Sackets Harbor New York ZIP codes | 10 mi | 1 ZIP code |
| Deferiet New York ZIP codes | 12 mi | 1 ZIP code |
| Adams New York ZIP codes | 13 mi | 1 ZIP code |
| Chaumont New York ZIP codes | 13 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.