Lawrenceburg is a city in Dearborn County, Indiana, United States. The population was 5,042 at the 2010 census. The city is the county seat of Dearborn County. Lawrenceburg is located in southeast Indiana, on the Ohio River west of Cincinnati.
Lawrenceburg is located at 39°5′46″N 84°51′28″W / 39.09611°N 84.85778°W / 39.09611; -84.85778 (39.096015, -84.857783).
According to the United States Census Bureau, the city has a total area of 5.0 square miles (13.1 km²), of which, 4.9 square miles (12.7 km²) of it is land and 0.1 square miles (0.4 km²) of it (2.78%) is water.