Lawrence County is a county located in the U.S. state of Tennessee. As of 2000, the population was 39,926. The 2005 Census Estimate placed the population at 41,101.. The 2010 Census Estimate placed the population of Lawrence County Tennessee at 47,823. It's Estimated to be over 50,000 by the end of 2012. . Its county seat is Lawrenceburg. Lawrenceburg in Lawrence County is the largest city on the Tennessee state line between Memphis and Chattanooga Tennessee.
It was named in honor of Captain James Lawrence (1781–1813), who while commanding the USS Chesapeake in an 1813 battle with the Royal Navy frigate HMS Shannon, issued his famous command: "Don't give up the ship! Blow her up." His men did anyway and Lawrence died of wounds.
Lawrenceburg was chosen as the county seat in 1819 as it was near the center of the county and because Jackson's Military Road ran just east of the town. In April 1821, the road was redirected through the center of the Lawrenceburg. The military road, the main route from Natchez, Mississippi, to Nashville, Tennessee, played a significant role in the county's development.
An early resident was David Crockett, who served as one of the county's first commissioners and justices of the peace. Crockett lived in the county for several years and ran a water-powered grist mill, powder mill and distillery on Shoal Creek, where David Crockett State Park is now located.
Between 1908 and 1915, there was an influx of settlers from Alabama. Most were cotton growers or worked in the timber industry. Logging soon declined, since the forests were not replanted after trees were harvested; however, cotton continued to be a major crop until the 1960s.
In 1944, Amish people moved to the area and established a community in the north of the county. The Old Order Amish community has now become a tourist attraction.