Hartselle is the second largest city in Morgan County, Alabama, about 10 miles south of Decatur, and is included in the Decatur Metropolitan Area, as well as the Huntsville-Decatur Combined Statistical Area. As of the 2000 census, the population of the city is 12,019. Hartselle apartments for rent comparison page shows most up to date rent information on Hartselle apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.