Dearborn County

Dearborn County is a county in southeastern Indiana bordering Ohio, with the Ohio River forming its southeastern edge. Lawrenceburg serves as its county seat and administrative center.

The county was founded in 1803 and named after Henry Dearborn, who served as United States Secretary of War. It grew as a trading and administrative center during the 1800s as settlement pushed westward.

The downtown area displays Federal and Greek Revival buildings from the early 1800s alongside Queen Anne and Bungalow homes from around 1900. These structures shape the character of the town center and show how different eras sit side by side.

Lawrenceburg sits directly on Interstate 74, making it easy to reach from Cincinnati and other nearby cities. The town center is walkable and most places of interest are accessible by car.

Between 1811 and 1845, the original territory was subdivided seven times to create new counties. These divisions reveal how quickly the region grew and how new administrative areas were established on the expanding frontier.

Location: Indiana

Inception: 1803

Capital city: Lawrenceburg

Part of: Cincinnati metropolitan area

Shares border with: Franklin County, Butler County, Hamilton County, Boone County, Ohio County, Ripley County

Website: http://dearborncounty.org

GPS coordinates: 39.15000,-84.98000

Latest update: December 7, 2025 10:07