Gila is a census-designated place in Grant County, New Mexico, United States. It is 48 kilometres northwest of the county seat, Silver City. Its population was 314 as of the 2010 census. The community is located in the irrigated valley of the Gila River in the midst of hilly and mountainous semi-arid terrain. The townsite was sporadically populated by the Ap…Gila is a census-designated place in Grant County, New Mexico, United States. It is 48 kilometres northwest of the county seat, Silver City. Its population was 314 as of the 2010 census. The community is located in the irrigated valley of the Gila River in the midst of hilly and mountainous semi-arid terrain. The townsite was sporadically populated by the Apache, Spanish and Mexican colonists, and American mountain men prior to the rise to prominence of the million-acre Lyons & Campbell Ranch. The ranch established its headquarters in Gila in 1890 and was one of the largest ranches in the United States. The headquarters building is on the National Register of Historic Places.