Jurupa Valley (Serrano: Hurumpa) is a city in the northwest corner of Riverside County, California, United States. It was the location of one of the earliest non-native settlements in the county, Rancho Jurupa. The Rancho was initially an outpost of the Mission San Gabriel Arcángel, then a Mexican land grant in 1838. The name is derived from a Native American village that existed in the area prior to the arrival of Europeans. On March 8, 2011, voters approved a ballot measure, Measure A, to incorporate and form the city of Jurupa Valley. The effective date of incorporation was July 1, 2011. Residents of the area had previously voted on incorporation in 1992, but rejected that measure, along with a competing ballot measure that would have incorporated Mira Loma. The city of Jurupa Valley covers approximately , and had a population of 105,053 as of the 2020 census. It is bordered by the cities of Eastvale, Norco, and Riverside in Riverside County and the cities of Ontario, Fontana, Rialto, and Colton in neighboring San Bernardino County. History Etymology Although there was no geographic feature or town officially named Jurupa Valley prior to the establishment of the city in 2011, the term Jurupa Valley is known to have been used as early as 1887 when referring to lands along the northeast side of the Santa Ana River opposite the city of Riverside. The name Jurupa was derived from the 1838 Mexican land grant Rancho Jurupa, which the Jurupa Valley area had been part of. The Rancho in turn derived its name from a previous Jurupa rancho operated by the Mission San Gabriel Arcángel, until the mission was disbanded through the Mexican secularization act of 1833. The first rancho was named for the Native American village Jurupa that existed in the area prior to the arrival of European colonizers. Both Serrano and Gabrieleño Indians lived in the area. The Gabrieleño referred to the village as Jurungna or Hurungna. The exact meaning of the word Jurupa is disputed. The 1890 book, An Illustrated History of Southern California, states that the word Jurupa was a greeting, meaning ″peace and friendship″, used by the Native Americans when the first Catholic priest visited the area. In 1902 Father Juan Caballeria, in his History of San Bernardino Valley; From the Padres to the Pioneer, states that the word was derived from Jurumpa, meaning watering place. Later linguistic studies