According to the United States Census Bureau, the CDP has a total area of 2.3 square miles (5.9 km2), all land. Chase is centered on the intersection of Huntsville Road and Chase Road (in a valley to the north of Larksville Mountain). Larksville Borough is 3 miles (5 km) to the south (on the opposite side of the mountain). PA 309 and the village of Trucksville are 2 miles (3 km) to the northeast.