Wilmington Island, Georgia, United States [CDP]; population was 11,230 in 1990; housing units was 4,552 in 1990; location is 32°0'N 80°58'W; land area is 8.47 square miles (5,419 acres); water area is 0.97 square miles (621 acres); FIPS code is 83168 [SourceCBP]