Sequatchie County, Tennessee
is a county located in the U.S. state of Tennessee. As of the 2010 census, the population was 14,112. Its county seat is Dunlap. Sequatchie County is part of the Chattanooga, TN–GA Metropolitan Statistical Area.
Sequatchie County was created in 1857 from a portion of Hamilton County. It was named for the Sequatchie Valley, which in turn had been named for a Cherokee chief. The word sequachee in Cherokee means, "opossum" or "he grins or runs." Settlers began arriving in what is now Sequatchie by the early 19th century, drawn to the area by the fertile land in the valley.
Sequatchie is one of three counties (along with Bledsoe and Marion) situated in the Sequatchie Valley, a long, narrow valley running northeast-to-southwest across the eastern portion of the Cumberland Plateau. The county is flanked by the Plateau's Walden Ridge escarpment on the east. The Sequatchie River, which spans the valley, passes through the county.