Cookeville is the county seat and largest city of Putnam County, Tennessee, United States. As of the 2020 United States census, its population was reported to be 34,842. It is recognized as one of the country's micropolitan areas, smaller cities which function as significant regional economic hubs. Of the twenty micropolitan areas in Tennessee, Cookeville is the largest. The Cookeville micropolitan area's 2010 Census population was 106,042. The U.S. Census Bureau ranked the Cookeville micropolitan area as the 7th largest-gaining micropolitan area in the country between 2018-2019, with a one-year gain of 1,796 and a 2019 population of 114,272. The city is a college town, home to Tennessee Technological University.

The Cumberland Gap is a pass through the long ridge of the Cumberland Mountains, within the Appalachian Mountains, near the junction of the U.S. states of Kentucky, Virginia, and Tennessee. It is famous in American colonial history for its role as a key passageway through the lower central Appalachians. Long used by Native American nations, the Cumberland Gap was brought to the attention of settlers in 1750 by Thomas Walker, a Virginia physician and explorer. The path was used by a team of frontiersmen led by Daniel Boone, making it accessible to pioneers who used it to journey into the western frontiers of Kentucky and Tennessee. It was an important part of the Wilderness Road and is now part of the Cumberland Gap National Historical Park.

Wilson County is a county in the U.S. state of Tennessee. It is in Middle Tennessee. As of the 2020 census, the population was 147,737. Its county seat is Lebanon. The largest city is Mt. Juliet.Wilson County is part of the Nashville-Davidson–Murfreesboro–Franklin, TN Metropolitan Statistical Area.

Rutherford County is a county located in the U.S. state of Tennessee. It is located in Middle Tennessee. As of the 2020 census, the population was 341,486, making it the fifth-most populous county in Tennessee. A study conducted by the University of Tennessee projects Rutherford County to become the third largest county in Tennessee by population by 2050. Its county seat is Murfreesboro, which is also the geographic center of Tennessee. As of 2010, it is the center of population of Tennessee.Rutherford County is included in the Nashville-Davidson–Murfreesboro–Franklin, TN Metropolitan Statistical Area.