Seffner, Florida, United States [CDP]; population was 5,371 in 1990; housing units was 2,095 in 1990; location is 27°60'N 82°16'W; land area is 3.62 square miles (2,315 acres); water area is 0.11 square miles (71 acres); FIPS code is 64925 [SourceCBP]