Sullivan County, Indiana

Sullivan County is a county in Indiana with an estimated population of 20,757 in 2023. 6 cities, towns and Census places in it are indexed here.

Largest places in Sullivan County

About Sullivan County

Sullivan County is one of the counties of Indiana. County governments in Indiana handle local services such as courts, property records and elections; cities and towns inside the county run their own municipal services. Population figures come from the Census Bureau's Vintage 2023 estimates, which are updated annually.