Alta Loma is a unity of three unincorporated areas that became part of the city of Rancho Cucamonga, California, the United States in 1977. The area is located at 34.15°N 117.60°W in the foothills of the south face of the San Gabriel Mountain range, near Cucamonga Peak and Mount San Antonio.
Etiwanda
Etiwanda is the easternmost of three formerly unincorporated communities that became part of Rancho Cucamonga, California, in 1977.
San Antonio Heights is a census-designated area in San Bernardino County, California. It is in the north Pomona Valley and the foothills of the San Gabriel Mountains. The people was 3,371 at the 2010 census, up from 3,122 at the 2000 census.