Rancho Jurupa was a 40,569-acre (164.18 km2) Mexican land grant in California, United States, that is divided by the present-day counties of Riverside and San Bernardino. The land was granted to Juan Bandini by Governor Juan B. Alvarado in 1838.[1] Located along both banks of the Santa Ana River in southern California,[2] the rancho included much of the land in the present day city of Jurupa Valley, as well as the downtown area in the city of Riverside.