what county is grand junction tn in
Grand Junction, TN. Sponsored Topics. Grand Junction is a city in Fayette and Hardeman counties in the U.S. state of Tennessee. The population was 301 at the 2000 census, and is currently 321. Grand Junction is located at 35Â°2â²53â³N 89Â°11â²25â³W / 35.04806Â°N 89.19028Â°W / 35.04806; -89.19028 (35.048023, -89.190177).