Three Mile Bay, New York

Three Mile Bay, New York
Three Mile Bay
Three Mile Bay
Coordinates: 44°4′53″N 76°11′54″W / 44.08139°N 76.19833°W / 44.08139; -76.19833
CountryUnited States
StateNew York
CountyJefferson
TownLyme
Area
 • Total
0.30 sq mi (0.77 km2)
 • Land0.28 sq mi (0.73 km2)
 • Water0.012 sq mi (0.03 km2)
Elevation
259 ft (79 m)
Population
 (2020)
 • Total
187
 • Density661.0/sq mi (255.23/km2)
Time zoneUTC-5 (Eastern (EST))
 • Summer (DST)UTC-4 (EDT)
ZIP Codes
Area code315
GNIS feature ID967455
FIPS code36-73737

Three Mile Bay is a hamlet and census-designated place (CDP) in the town of Lyme in Jefferson County, New York, United States. The elevation is 259 feet (79 m). As of the 2020 census, Three Mile Bay had a population of 187.

The hamlet has its own post office, a volunteer fire company, and boat launches for fishing and recreation in the various outlying bays that draw from Lake Ontario and the St. Lawrence seaway.