Goodlettsville is a city in Davidson and Sumner counties in the U.S. state of Tennessee. It was incorporated as a city in 1958 with a population of just over 3,000 residents; in 2020, the population was 17,789. It is part of the Nashville metropolitan area.

Davidson County is a county in the U.S. state of Tennessee. It is located in the heart of Middle Tennessee. As of the 2020 census, the population was 715,884, making it the 2nd most populous county in Tennessee. Its county seat is Nashville, the state capital and most populous city.