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is a city in Sequatchie County, Tennessee, United States. The population was 4,173 at the 2000 census. It is the county seat of Sequatchie County.
Dunlap is located at (35.377236, -85.388455). The city is located near the center of Sequatchie Valley, a long and narrow valley stretching like a gash in the Cumberland Plateau in southeastern Tennessee and northeastern Alabama. The plateau's western Sequatchie Valley escarpment, known locally as "Fredonia Mountain," rises over above the valley just west of Dunlap. The Sequatchie River forms the city's southeastern boundary.
U.S. Route 127 (called "Rankin Avenue" in Dunlap), which traverses the Tennessee section of Sequatchie Valley, connects Dunlap to Crossville and the upper plateau area to the north and Chattanooga opposite Signal Mountain to the southeast. Tennessee State Route 111, which intersects US-127 in Dunlap, connects the city to Chattanooga to the southeast and the Eastern Highland Rim area opposite the plateau to the northwest.
According to the United States Census Bureau, the city has a total area of 8.6 square miles (22.3 km²), all of it land.