Houston County, Tennessee PO Box 388Erin, TN 37061Phone: (931) 289-4165Fax: (931) 289-2603In west-central TN, southwest of Clarksville; organized Jan 23, 1871 from Dickson, Montgomery, Stewart, and Humphreys counties. Name Origin: For Samuel Houston (1793-1863), governor of TN (1827-29...