Blountville is a city located in Sullivan County Tennessee. Blountville has a 2020 population of 3,102. It is also the county seat of Sullivan County. Blountville is currently declining at a rate of 0.00% annually and its population has increased by 0.91% since the most recent census, which recorded a population of 3,074 in 2010. Blountville reached it's highest population of in .
The average household income in Blountville is $76,758 with a poverty rate of 12.51%. The median rental costs in recent years comes to $660 per month, and the median house value is $137,500. The median age in Blountville is 42.6 years, 41.7 years for males, and 48.6 years for females.