Wellesley Island, NY ZIP code
The ZIP code for Wellesley Island, New York is 13640. It is in Jefferson County.
- Population in these ZIPs
- 318
- Avg. median income
- $118,000population-weighted
- Typical home value
- $491,500population-weighted
- Metro area
- Watertown-Fort Drum, NY
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Wellesley Island, NY ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 13640 | 318 | $118,026 | $491,500 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Wellesley Island
- Thousand Island Park 4 mi
- Alexandria Bay 4 mi
- Fishers Landing 4 mi
- Plessis 8 mi
- Clayton 9 mi
- La Fargeville 10 mi
- Redwood 11 mi
- Theresa 13 mi
- Chippewa Bay 14 mi
- Depauville 15 mi
- Hammond 17 mi
- Philadelphia 17 mi
Frequently asked questions
What is the ZIP code for Wellesley Island, NY?
The ZIP code for Wellesley Island, NY is 13640.
What county is Wellesley Island, New York in?
Wellesley Island ZIP codes are in Jefferson County.