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. This list gives their names and
etymologies, dates settled and incorporated, what they were formed from, area, population, and location within the county. 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.