Belfast, New York Demographics & Population 2026

A note before these figures: with a population of 633, Belfast's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Belfast is a small community located in New York, within Allegany County. The total population is 633. It ranks as the 992nd most populous out of 1,289 Census-designated places in New York.

Age Demographics

The median age in Belfast is 34.5 years. This is 13% lower than the state median of 39.8 years. 10.4% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Belfast is $56,250. This is 35% lower than the state median of $85,974. It is also 30% lower than the national median of $80,734. The poverty rate stands at 11.7%. This is 17% lower than the state poverty rate of 14.0%. The unemployment rate is 1.4%. This is 79% lower than the state rate of 6.4%. The median home value is $94,600. Housing costs are 78% lower than the state median of $423,800. With a home-value-to-income ratio of just 1.7x, Belfast is one of the most affordable housing markets in the area. 71.9% of occupied housing units are owner-occupied. This homeownership rate is 32% higher than the state average of 54.4%.

Race & Ethnicity

Every resident counted in Belfast was recorded as White (non-Hispanic). A figure of exactly 99.1% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.

Education

32.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 20% lower than the state rate of 40.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.5%.

Data Sources & Methodology

All demographic data for Belfast, New York is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against New York state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,289 Census-designated places in New York. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.