Prior to the Spanish colonization of the Americas and the arrival of European settlers fromMexico, the Yucaipa Valley was known asYukaipa't, which meant "green valley" in the Serrano American Language.[5] The land was home to the Serrano Native Americans for thousands of years.[6] Today, some of their descendants are enrolled in theSan Manuel Band of Mission Indians.[7]
Yucaipa Valley supported a large population of Serrano Native Americans. The fertile valley was watered by springs and creeks running out of theSan Bernardino Mountains. The Serrano Americans lived in this location most of the year, but would make excursions into the mountains to gather acorns and other food items during their harvest season. The Rancheria is marked byCalifornia Historical Landmark #620.[8]
Near the Rancheria is the Yucaipa Adobe, which is believed to be the oldest house in San Bernardino County. Diego Sepúlveda, nephew ofAntonio María Lugo, built the Adobe in 1842 on land that was part of theRancho San Bernardino granted in 1842 to the Lugos. It had formerly been land controlled bySan Gabriel Mission. The Rancho suffered losses of cattle and horses from raids by Native Americans coming throughCajon Pass andBanning Pass from the deserts. Eventually, they sold the Rancho to Mormon settlers in September 1851. The Adobe's later owners included John Brown Sr., James W. Waters, and the Dunlap family; it was acquired by San Bernardino County in 1955. The site is marked by California Historical Landmark #528.[8]
The nearbyOak Glen area is best known for its apple orchards, some of which are operated by the direct descendants of the original founders (the Parrish, Wilshire, Rivers, and Law families). The Parrish Pioneer Ranch and orchard were founded by Enoch Parrish in 1876, with the other families coming into the area later.
At 1:53 p.m. on June 16, 2005, Yucaipa experienced a 4.9Mw earthquake that was centered four miles (6.4 km) north of the center of town. It had a maximumMercalli intensity of VI (Strong) and was felt from downtownLos Angeles to some areas ofSan Diego. Three people were injured.[9]
In 2016, Yucaipa broke ground on a multipurpose performing arts center on the corner of Acacia Avenue and California Street. Sitting on 2.7 acres (11,000 m2) in the heart of uptown, the 16,200 sq ft (1,510 m2) venue hosts a variety of events, including community theater, open-air concerts, dance, and other arts-related events. The performing arts center officially opened in Spring 2019.[10]
Yucaipa is located in southern California, approximately 72 miles (116 km) east ofLos Angeles. The city is approximately 2,600 ft (790 m) above sea level and is bordered by Redlands to its west and Calimesa to its south. The unincorporated communities of Cherry Valley, Mentone and Oak Glen collectively account for Yucaipa's northernmost outskirts.
Yucaipa is home to Yucaipa Regional Park, Flag Hill Veterans Memorial Park, Seventh Street Park, "I" Street Park, Wildwood Park, Yucaipa Community Park, the Bryant Glen Sports Complex, the Rick McCowan Regional Soccer Complex, andWildwood Canyon State Park.
The census reported that 99.2% of the population lived in households, 0.3% lived in non-institutionalized group quarters, and 0.5% were institutionalized.[14]
There were 19,479 households, out of which 34.1% included children under the age of 18, 51.8% were married-couple households, 6.2% werecohabiting couple households, 26.1% had a female householder with no partner present, and 15.9% had a male householder with no partner present. 23.0% of households were one person, and 11.9% were one person aged 65 or older. The average household size was 2.78.[14] There were 13,944families (71.6% of all households).[15]
The age distribution was 23.6% under the age of 18, 8.0% aged 18 to 24, 25.0% aged 25 to 44, 26.3% aged 45 to 64, and 17.2% who were 65years of age or older. The median age was 39.6years. For every 100 females, there were 94.9 males.[14]
There were 20,190 housing units at an average density of 714.2 units per square mile (275.8 units/km2), of which 19,479 (96.5%) were occupied. Of these, 72.7% were owner-occupied, and 27.3% were occupied by renters.[14]
In 2023, the US Census Bureau estimated that 10.5% of the population were foreign-born. Of all people aged 5 or older, 77.2% spoke only English at home, 18.8% spokeSpanish, 2.3% spoke otherIndo-European languages, 1.6% spoke Asian or Pacific Islander languages, and 0.0% spoke other languages. Of those aged 25 or older, 89.2% were high school graduates and 26.2% had a bachelor's degree.[16]
The median household income was $92,401, and theper capita income was $38,468. About 7.0% of families and 8.9% of the population were below the poverty line.[17]
From November 1999, Richard (Dick) D. Riddell was the longest-serving mayor (and the oldest, at age 88) in Yucaipa's history. In November 2012, at the request of newly sworn councilman Bobby Duncan, Denise Hoyt was named the new Mayor. As of 2025[update], Yucaipa's City Council was composed of Mayor Jon Thorp, Mayor Pro Tem Chris Venable, Councilmember Bob Miller, Councilmember Judy Woolsey and Councilmember Justin Beaver.[2]
TheSan Bernardino County Sheriff's Department serves Yucaipa—including the nearby unincorporated towns ofMentone,Oak Glen, Forest Falls,Angelus Oaks, and Mountain Home Village—from its regional station at 34282 Yucaipa Boulevard (a larger replacement opened on July 1, 2014, next to City Hall at 34144 Yucaipa Boulevard). Since there is no official jail facility at this station, suspects are booked at either Central Jail indowntown San Bernardino or the West Valley Detention Center inRancho Cucamonga.
Yucaipa has contracted operation of its fire department to theCalifornia Department of Forestry and Fire Protection (now known as "Cal Fire") which serves the city from three stations: the 33000 block of Yucaipa Boulevard, Bryant Street (in the "North Bench" area), and the southwest corner of Fifth Street and Wildwood Canyon Road. Cal-Fire also provides paramedic level emergency medical service while patient transport by ground is handled byAmerican Medical Response.
NO. 620 YUCAIPA RANCHERIA - Yucaipa Valley supported a large population of Serrano Indians. The fertile valley was watered by springs and creeks. The Indians called this area 'Yucaipat' which meant 'wet lands.' These Native Americans lived at this village site most of the year, with occasional excursions to the mountains to gather acorns and other food items during the harvesting season.[21]
Marker at the site reads:
NO. 528 YUCAIPA ADOBE - Constructed in 1842 by Diego Sepúlveda, nephew of Antonio María Lugo, this is believed to be the oldest house in San Bernardino County. The land, formerly controlled by San Gabriel Mission, was part of the Rancho San Bernardino granted to the Lugos in 1842. The adobe's later owners included John Brown Sr., James W. Waters, and the Dunlap family, it was acquired by San Bernardino County in 1955.[22]