Sullivan County, New York Demographics 2026

Population Overview

Sullivan County is located in New York with a total population of 79,147. It is the 33rd most populous county out of 62 in New York. The county encompasses 31 Census-designated places.

Age Demographics

The median age in Sullivan County is 41.7 years. This is 5% higher than the state median of 39.6 years.

Economy, Income & Housing

The median household income in Sullivan County is $69,826. This is 17% lower than the state median of $84,578. It is also 11% lower than the national median of $78,538. The poverty rate stands at 15.2%. This is 11% higher than the state poverty rate of 13.7%. The unemployment rate is 6.1%. This is 2% lower than the state rate of 6.2%. The median home value is $234,800. Housing costs are 42% lower than the state median of $403,000. The home-value-to-income ratio is 3.4x. 69.3% of occupied housing units are owner-occupied. This homeownership rate is 28% higher than the state average of 54.3%.

Race & Ethnicity

The largest racial or ethnic group in Sullivan County is White (non-Hispanic), making up 67.2% of the population. Hispanic or Latino residents account for 18.4%. The Asian population (2.0%) is well below the state average of 8.8%.

Education

29.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 25% lower than the state rate of 39.6%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 87.7%.

Data Sources & Methodology

All figures for Sullivan County come from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023), with comparisons drawn against New York and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.