Marklesburg is a borough in Huntingdon County, Pennsylvania, United States. The population was 216 at the 2000 census. The former town of Aitch, which was flooded when Raystown Lake was made, is located near the town. Marklesburg apartments for rent comparison page shows most up to date rent information on Marklesburg apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.