Straban Township is a township in Adams County, Pennsylvania, United States. The population was 4,928 at the 2010 census. Straban Township is located in central Adams County, adjacent to the eastern border of Gettysburg. A portion of the Gettysburg National Military Park is within the township. According to the United States Census Bureau, the townsh…Straban Township is a township in Adams County, Pennsylvania, United States. The population was 4,928 at the 2010 census. Straban Township is located in central Adams County, adjacent to the eastern border of Gettysburg. A portion of the Gettysburg National Military Park is within the township. According to the United States Census Bureau, the township has a total area of 34.4 square miles, of which 34.3 square miles is land and 0.15 square miles, or 0.46%, is water.