Belfast is a hamlet in the Town of Belfast, Allegany County, New York, United States. The population was 837 at the 2010 census, which lists the community as a census-designated place.^[6]

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Belfast, New York
Hamlet & CDP
Belfast Location within the state of New York
Coordinates: 42°20′34″N 078°06′41″W[1]
Country	United States
State	New York
County	Allegany County
Town	Town of Belfast
Area [2]
• Total	1.57 sq mi (4.08 km2)
• Land	1.55 sq mi (4.01 km2)
• Water	0.03 sq mi (0.07 km2)
Elevation [1]	1,309 ft (399 m)
Population  (2020)
• Total	745
• Density	481.27/sq mi (185.79/km2)
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)
ZIP code[3]	14711
Area code	585
FIPS code[4][5]	36-05562
GNIS feature ID[5]	943574

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Belfast is located at 42°20′34″N 078°06′41″W (42.3428443, −78.1113975) and its elevation is 1,309 feet (399 m).^[1]

According to the United States Census Bureau, Belfast has a total area of 1.412 square miles (3.66 km²), of which 1.385 square miles (3.59 km²) is land and 0.027 square miles (0.07 km²) is water.^[4]

As of the 2010 census, there were 837 people, 337 households, and 213 families. The population density was 593 inhabitants per square mile (229/km²). There were 377 housing units at an average density of 267 per square mile (103/km²). The racial makeup as of 2010 was 95.9% White, 0.7% Black or African American, 0.2% American Indian and Alaska Native, 1.1% Asian, 0.2% from other races, and 0.1% from two or more races. Hispanic or Latino of any race were 0.7% of the population.^[6]

There were 337 households, out of which 34.4% had children under the age of 18 living with them, 45.1% were married couples living together, 12.2% had a female householder with no husband present, and 36.8% were non-families. 31.2% of all households were made up of individuals, and 14.9% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 3.12.^[6]

Ages were 30.5% under 20, 4.7% from 20 to 24, 24.9% from 25 to 44, 23.3% from 45 to 64, and 16.6% who were 65 or older. The median age was 37.9 years. The population was 46.7% male and 53.3% female.^[6]