page_title: Marion County, Tennessee
section_title: Geography
hierarchical_section_title: Marion County, Tennessee / Geography
caption_attribution_description: English: Foster Falls, Tennessee
context_page_description: Marion County is a county located in the U.S. state of Tennessee. It is located in East Tennessee. As of the 2010 census, the population was 28,237. Its county seat is Jasper. Marion County is part of the Chattanooga, TN–GA Metropolitan Statistical Area. Marion County is in the Central time zone, while Chattanooga proper is in the Eastern time zone.
context_section_description: According to the U.S. Census Bureau, the county has a total area of 512 square miles (1,330 km²), of which 498 square miles (1,290 km²) is land and 14 square miles (36 km²) (2.8%) is water. Marion is one of three Tennessee counties, along with Bledsoe and Sequatchie, located in the Sequatchie Valley, a long, narrow valley slicing through the southeastern Cumberland Plateau.  The Sequatchie River, which drains the valley, empties into the Tennessee River just south of Jasper.
  Nickajack Dam is located along the Tennessee River near Jasper, creating Nickajack Lake. The section of the river immediately downstream from the dam is part of Guntersville Lake.  The Raccoon Mountain Pumped-Storage Plant is located in the extreme southeastern part of the county.
caption: Foster Falls, at one end of the Fiery Gizzard Trail
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