El Reno, Oklahoma, United States [City]; population was 15,414 in 1990; housing units was 6,239 in 1990; location is 35°33'N 97°58'W; land area is 79.64 square miles (50,968 acres); water area is 0.35 square miles (221 acres); FIPS code is 23700 [SourceCBP]