Seagoville, Texas, United States [City]; population was 8,969 in 1990; housing units was 3,347 in 1990; location is 32°39'N 96°33'W; land area is 16.20 square miles (10,370 acres); water area is 0.05 square miles (31 acres); FIPS code is 66428 [SourceCBP]