Philadelphia is a village in Jefferson County, New York, United States.

[citation needed] Philadelphia holds the December record low temperature for New York state of −47 °F (−44 °C).

[citation needed] According to the United States Census Bureau, the village has a total area of 0.89 square miles (2.3 km2), all land.

NY-26 leads northwest 18 miles (29 km) to Alexandria Bay on the St. Lawrence River.

There were 595 housing units at an average density of 662.8 per square mile (255.9/km2).

21.4% of all households were made up of individuals, and 11.5% had someone living alone who was 65 years of age or older.