Sullivan County, Pennsylvania, United States, is divided into 13 incorporated municipalities. State law defines the two kinds of municipalities present in the county: four boroughs and nine townships. In the 2010 census, the population of Sullivan County was 6,428,[1] making it an "Eighth Class County", defined by Pennsylvania law as "having a population of less than 20,000 inhabitants".[2] Its county seat is Laporte, which was the smallest county seat in Pennsylvania by population, as of 2001.[3]
Sullivan County is located in north central Pennsylvania, about 123 miles (198 km) northwest of Philadelphia and 195 miles (314 km) east-northeast of Pittsburgh.[4] The county covers 452 square miles (1,170 km2), of which 450 square miles (1,165 km2) is land and 2 square miles (5.2 km2) (0.53%) is water. Its municipalities range in size from the borough of Dushore with 0.9 square miles (2.3 km2) to Davidson Township with 78.2 square miles (203 km2). Cherry Township has the highest population of any municipality (1,705 or 26.5% of the county total as of 2010), while the borough of Eagles Mere has the lowest population (120 or 1.9%).[1]
Although Sullivan County has boroughs and townships, it has no cities. Any municipality in Pennsylvania with more than 10 persons can incorporate as a borough. Any township or borough with a population of at least 10,000 can ask the state legislature to become chartered as a city. However, as Sullivan County has a population of only 6,428, it has no cities. There are no unincorporated areas in the county, since all territory in Pennsylvania is incorporated.[2]