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, or 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 and 2019, with a one-year gain of 1,796 and a 2019 population of 114,272.