Johnsonburg is a borough in Elk County, Pennsylvania, 164 miles northeast of Pittsburgh. It is in a productive farming and lumbering region. Paper mills were once common here, and Domtar still maintains a paper mill there today. In 1910, 4,334 people lived here. The population was 3,003 at the 2000 census. Johnsonburg apartments for rent comparison page shows most up to date rent information on Johnsonburg apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.