Lawrenceburg is a city in Lawrence County, Tennessee, United States, Lawrenceburg is the largest city on the state line between Chattanooga and Memphis. It sets on the banks of Shoal Creek. (originally called (Sycamore River) According to the U.S. Census Bureau, the city's population was 10,428 in 2010, with an estimate of over 14,736 as of the end of 2016. Lawrenceburg is the county seat of Lawrence County. The city is named after War of 1812 American Navy officer James Lawrence.