Home > NY > Jefferson County > Wellesley Island > Zip 13640

Zip Code 13640 — Wellesley Island, NY

13640 is a ZIP Code associated with Wellesley Island, NY, located within Jefferson. The postal region supports an estimated population of 318 residents across Data Pending housing units, with a population density of 10.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (44.319800, -75.999370)

Data MetricLocal Statistic
Postal / Zip Code13640
Primary CityWellesley Island
State / ProvinceNY
CountyJefferson
Total Population318
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density10.0 people/sq mi
TimezoneAmerica/New_York

How 13640 Compares

MetricZIP 13640Jefferson CountyNY State Average
Population318115,97219,771,902
Median IncomeData PendingN/AN/A
Population Density10.0 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 13692Thousand Island Park2.5 mi222N/A
Zip 13641Fishers Landing3.2 mi91N/A
Zip 13607Alexandria Bay4.4 mi2,020N/A
Zip 13624Clayton8.3 mi4,650N/A
Zip 13675Plessis8.4 mi54N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →