Belleville, New York Demographics & Population 2026

A note before these figures: with a population of 220, Belleville'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

Belleville is a small community located in New York, within Jefferson County. The total population is 220. It ranks as the 1202nd most populous out of 1,289 Census-designated places in New York.

Age Demographics

The median age in Belleville is 59.9 years. This is 51% higher than the state median of 39.8 years. Only 5.5% of residents are under 18, indicating fewer families with children. 15.9% 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 Belleville is $70,278. This is 18% lower than the state median of $85,974. It is also 13% lower than the national median of $80,734. The poverty rate stands at 8.6%. This is 38% lower than the state poverty rate of 14.0%. The survey records no unemployed residents in Belleville, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $160,400. Housing costs are 62% lower than the state median of $423,800. With a home-value-to-income ratio of just 2.3x, Belleville is one of the most affordable housing markets in the area. 88.3% of occupied housing units are owner-occupied. This homeownership rate is 62% higher than the state average of 54.4%.

Race & Ethnicity

Every resident counted in Belleville was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.

Education

16.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 58% 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 96.2%. Notably, 16.8% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Belleville, 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.