Emlenton is a borough located in both Venango and Clarion Counties in Pennsylvania. The population was 784 at the 2000 census. The borough is also home to the Emlenton Bridge, which spans the Allegheny River, and is the tallest bridge east of the Mississippi River in the United States. Emlenton apartments for rent comparison page shows most up to date rent information on Emlenton apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.