Sullivan County, New York

Sullivan County population, land area and income

Sullivan County had 80,450 residents in the Census Vintage 2024 estimate, on 968.2 square miles of land. It ranks 33rd of 62 in New York by population and 18th by land area. That works out to 83.1 people per square mile, near the US average of 96.3, and above the national county median.

The median county-equivalent in New York has 85,936 residents, about the same as Sullivan County.

Its SAIPE 2023 median household income of $68,063 is above the national county median among 3,143 counties with an estimate.

How Sullivan County's population changed since 2020

Sullivan County gained 1,985 residents between the July 2020 and July 2024 estimates, a rise of 2.5%. That ranks 5th of 62 in New York for growth. The median New York county changed by -0.8%, and the state as a whole by -1.2%.

Since the April 2020 estimates base, Sullivan County recorded 4,067 births and 3,702 deaths, a natural change of +365. Net international migration added +1,144 and net domestic migration, people moving to or from other US counties, came to +431. The largest single component was international migration, which added 1,144 people.

Where Sullivan County is

The Census internal point of Sullivan County is at 41.720000, -74.771600. It sits in UTM zone 18N. The map shades New York's 62 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Sullivan County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Sullivan County

3 incorporated places of 1,000+ people have residents in Sullivan County, 13,450 people together, or 17% of the county. Each figure counts only the part of the town inside Sullivan County; towns marked "part" extend into another county. The largest is Monticello with 7,228.

Counties bordering Sullivan County

The Census 2024 county adjacency file lists 5 neighbors for Sullivan County, including 2 across a state line. The most populous is Orange County, NY, with 411,767 residents. Distances run between Census internal points in a straight line.

• Orange County

  411,767 people

  33 mi SE

• Ulster County

  182,977 people

  30 mi ENE

• PA

  Pike County, PA

  62,376 people

  30 mi SSW

• PA

  Wayne County, PA

  51,419 people

  27 mi W

• Delaware County

  44,191 people

  34 mi NNW

Distance to Albany and the nearest big city

Albany is 82.8 miles NE of Sullivan County's internal point in a straight line. The nearest place of 100,000 or more is Paterson, NJ (population 160,463), 64.0 miles away. The nearest place of 10,000 or more is Middletown, NY (population 30,188), 26.2 miles away.

Sullivan County FIPS code

The FIPS code of Sullivan County is 36105: state code 36 for New York plus county code 105. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $68,063.