Radnor Township, Pennsylvania, United States [CDP]; population was 28,705 in 1990; housing units was 10,579 in 1990; location is 40°2'N 75°22'W; land area is 13.78 square miles (8,817 acres); water area is 0.01 square miles (6 acres); FIPS code is 63268 [SourceCBP]