. "1792-06-11Z"^^ . . "2010Z"^^ . "Knox County"@en . . . "3.5"^^ . "1.31571e+09"^^ . . "4.66198e+07"^^ . . . "432226"^^ . "1.36233e+09"^^ . "328.187"^^ . "Knox County is a county in the U.S. state of Tennessee. As of the 2010 census, the population was 432,226, making it the third-most populous county in Tennessee. Its county seat is Knoxville, the third-most populous city in Tennessee.Knox County is included in the Knoxville, TN Metropolitan Statistical Area.The county is at the geographical center of the Great Valley of East Tennessee."@en . .