Tennessee Population 2024. Nashville is the biggest city in tennessee, with a population of 687,150 in 2024. Tennessee’s population is expected to reach 7.94 million by 2040, according to new projections from the boyd center for business and economic research at the.
As far as tennessee’s population gains go, 2022 was a big year. The most populated counties in tennessee are shelby county with 910,042, davidson county at 712,334, knox county with 500,669, hamilton county at 379,864, and rutherford county with 367,101.