Sullivan County, county in Indiana, United States. As of 2020 county had an estimated population of 20,578 inhabitants. The county was created 209 years ago in 1816. Its county seat is Sullivan.
There are 1 city/town in Sullivan County, IN. The largest city of Sullivan County is Baker with a population of 754.
Baker, Unincorporated community in Indiana, United States
List of cities, towns, neighborhoods & other populated places in Sullivan County.
| City Name | Title | Population |
|---|---|---|
| Baker | Unincorporated community in Indiana, United States | 754 |