Sullivan County, Pennsylvania

Sullivan County population, land area and income

Sullivan County had 5,927 residents in the Census Vintage 2024 estimate, on 449.9 square miles of land. It ranks 66th of 67 in Pennsylvania by population and 50th by land area. That works out to 13.2 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Pennsylvania has 82,953 residents, so Sullivan County has 7% of the typical county's population.

Its SAIPE 2023 median household income of $59,604 is below the national county median among 3,143 counties with an estimate.

How Sullivan County's population changed since 2020

Sullivan County gained 96 residents between the July 2020 and July 2024 estimates, a rise of 1.6%. That ranks 17th of 67 in Pennsylvania for growth. The median Pennsylvania county changed by -0.5%, and the state as a whole by +0.6%.

Since the April 2020 estimates base, Sullivan County recorded 164 births and 416 deaths, a natural change of -252. Net international migration added +40 and net domestic migration, people moving to or from other US counties, came to +299. The largest single component was domestic migration, which added 299 people.

Where Sullivan County is

The Census internal point of Sullivan County is at 41.439300, -76.511700. It sits in UTM zone 18N. The map shades Pennsylvania's 67 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

No incorporated place of 1,000 or more people has residents in Sullivan County. Its 5,927 residents live in smaller towns, census-designated places, or unincorporated land, which the subcounty estimates do not list at this size.

Counties bordering Sullivan County

The Census 2024 county adjacency file lists 5 neighbors for Sullivan County. The most populous is Luzerne County, PA, with 331,379 residents. Distances run between Census internal points in a straight line.

• Luzerne County

  331,379 people

  33 mi ESE

• Lycoming County

  113,236 people

  29 mi WSW

• Columbia County

  66,012 people

  28 mi SSE

• Bradford County

  59,699 people

  24 mi N

• Wyoming County

  25,771 people

  27 mi ENE

Distance to Harrisburg and the nearest big city

Harrisburg is 83.5 miles SSW of Sullivan County's internal point in a straight line. The nearest place of 100,000 or more is Allentown, PA (population 127,138), 79.5 miles away. The nearest place of 10,000 or more is Berwick, PA (population 10,332), 29.8 miles away.

Sullivan County FIPS code

The FIPS code of Sullivan County is 42113: state code 42 for Pennsylvania plus county code 113. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $59,604.