Overview

Ohio County is a small county in the southeastern corner of the United States, located in the state of Indiana. It is notable for being the smallest county in Indiana by both land area and number of residents. At the 2010 census (2010) the population was recorded at 6,128, and the county covers about 87.43 square miles (226.4 km2). These features combine to give Ohio County a compact, rural character and a strong local identity tied to the nearby river.

History

The county was organized in 1844 and takes its name from the adjacent Ohio River. Its development followed typical patterns of river counties in the 19th century: settlement concentrated along the riverfront, agriculture on upland areas, and small towns that served as local trade centers. Historic buildings and early transportation routes remain part of the county’s cultural landscape.

Geography and communities

Ohio County lies along the banks of the Ohio River and shares regional connections with neighboring counties and the state across the river. The county seat and only incorporated municipality is Rising Sun, which functions as the primary concentration of services, shops and local government. The county contains a number of unincorporated communities and rural settlements; despite its small size it includes varied riverfront, floodplain and wooded upland environments that support recreation and agriculture.

Economy, services and landmarks

Economic activity in the county is largely local: small businesses, river-related recreation and tourism, agriculture, and services that support residents and visitors. Rising Sun hosts civic institutions, community events and a historic downtown that draws regional visitors. Public facilities such as parks and marinas take advantage of the river setting, and local efforts often emphasize preservation of scenic and historic resources.

Distinctive facts and governance

Ohio County is distinctive in Indiana for having only one incorporated town and for ranking at the bottom of the state in both area and population. The county government provides typical local responsibilities including roads, public records and local courts; many specialized services are shared with nearby counties or provided at the state level. For brief reference points: the county seat is listed as the official administrative center (county seat), and Rising Sun is the only incorporated municipality (incorporated) within county boundaries.

  • Established: 1844
  • County seat: Rising Sun
  • 2010 population: 6,128 (2010)
  • Notable: smallest county in Indiana by area and population

For more details on services, maps and local events, state and county resources provide up-to-date information and contacts. The county's compact size and riverfront location give it a distinctive role within southeastern Indiana's geography and community life.