There are 13 municipalities in Sullivan County, Pennsylvania, in the United States. Pennsylvania law defines the two kinds of incorporated municipalities in Sullivan County: four boroughs and nine townships. In the 2010 census, the population of Sullivan County was 6,428, making it an "Eighth Class County", defined by Pennsylvania law as "having a population of less than 20,000 inhabitants". Its county seat is Laporte, which was the smallest county seat in Pennsylvania by population as of 2001. Sullivan County (map pictured) is located in north-central Pennsylvania, about 123 miles (198 km) northwest of Philadelphia and 195 miles (314 km) east-northeast of Pittsburgh. 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). (Full list...)