McNairy County is a county located in the U.S. state of Tennessee. As of the 2020 census, the population was 25,866. The county seat and largest city is Selmer. McNairy County is located along Tennessee's border with the state of Mississippi.
McNairy County is a county located in the US state of Tennessee. As of th,e 2020 census, the population was 25866. The county seat and largest city is Selmer. McNairy County is located along Tennessee's border with the state of Mississippi.