Ripley is a city in Lauderdale County, Tennessee, United States. The population was 8,445 at the 2010 census. It is the county seat of Lauderdale County.
Ripley is located at 35°44′35″N 89°32′2″W (35.743115, −89.533872).
According to the United States Census Bureau, the city has a total area of 12.9 square miles (33 km2), of which 12.8 square miles (33 km2) is land and 0.04 square miles (0.10 km2) (0.31%) is water.
Ripley is located on the southeastern edge of the New Madrid Seismic Zone, an area with a high earthquake risk.
As of the census of 2000, there were 7,844 people, 3,142 households, and 2,054 families residing in the city. The population density was 612.3 people per square mile (236.4/km2). There were 3,397 housing units at an average density of 265.2 per square mile (102.4/km2). The racial makeup of the city was 51.56% White, 46.81% African American, 0.15% Native American, 0.27% Asian, 0.38% from other races, and 0.83% from two or more races. Hispanic or Latino of any race were 1.07% of the population.
There were 3,142 households, out of which 32.1% had children under the age of 18 living with them, 38.1% were married couples living together, 23.5% had a female householder with no husband present, and 34.6% were non-families.