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Riverside County

Riverside is the county seat of Riverside county. It has a population of 2.471 million in 2019. the area of Riverside county is 7,303 mi.

Riverside County is a county located in the southern portion of the U.S. state of California. As of the 2010 census, the population was 2,189,641,[2] making it the fourth-most populous county in California and the 10th-most populous in the United States. The name was derived from the city of Riverside, which is the county seat.[5]

Riverside County is included in the Riverside-San Bernardino-Ontario Metropolitan Statistical Area, also known as the Inland Empire. The county is also included in the Los Angeles-Long Beach Combined Statistical Area.

Roughly rectangular, Riverside County covers 7,208 square miles (18,670 km2) in Southern California, spanning from the greater Los Angeles area to the Arizona border. Geographically, the county is mostly desert in the central and eastern portions, but has a Mediterranean climate in the western portion. Most of Joshua Tree National Park is located in the county. The resort cities of Palm Springs, Palm Desert, Indian Wells, La Quinta, Rancho Mirage, and Desert Hot Springs are all located in the Coachella Valley region of central Riverside County.

Between 2007 and 2011, large numbers of Los Angeles-area workers moved to the county to take advantage of more affordable housing.[6] Along with neighboring San Bernardino County, it was one of the fastest growing regions in the state prior to the recent changes in the regional economy. In addition, smaller, but significant, numbers of people have been moving into southwest Riverside County from the San Diego metropolitan area. The cities of Temecula and Murrieta accounted for 20% of the increase in population of the county between 2000 and 2007.[citation needed]

History[edit][]

Etymology[edit][]

Main article: List of Riverside County, California placename etymologies

When Riverside County was formed in 1893 it was named for the city of Riverside, the county seat. The city, founded in 1870, received its name for its location beside the Santa Ana River.[7][8]

Early history[edit][]

The indigenous peoples of what is now Riverside County are the Luiseño, Cupeño and Cahuilla Indians.[9] The Luiseño territory includes the Aguanga and Temecula Basins, Elsinore Trough and eastern Santa Ana Mountains and southward into San Diego County. The Cahuilla territory is to the east and north of the Luiseño in the inland valleys, in the Santa Rosa and San Jacinto Mountains and the desert of the Salton Sink.

The first European settlement in the county was a Mission San Luis Rey de Francia estancia or farm at the Luiseño village of Temescal. In 1819, the Mission granted Leandro Serrano permission to occupy the land for the purpose of grazing and farming, and Serrano established Rancho Temescal. Serrano was mayordomo of San Antonio de Pala Asistencia for the Mission of San Luis Rey.

With the signing of the Treaty of Cordoba in 1821, Mexico gained its independence form Spain, but the San Gabriel Mission near what is now Los Angeles, California, continued to expand, and established Rancho San Gorgonio in 1824. The ranch was to be one of the Mission's principle rancherias, and the most distant, and it occupied most of today's San Gorgonio Pass area.[10][11]

Following Mexico's confiscation of Mission lands in 1833, a series of rancho land grants were made throughout the state. In the Riverside County this included; Rancho Jurupa in 1838, El Rincon in 1839, Rancho San Jacinto Viejo in 1842, Rancho San Jacinto y San Gorgonio in 1843, Ranchos La Laguna, Pauba, Temecula in 1844, Ranchos Little Temecula, Potreros de San Juan Capistrano in 1845, Ranchos San Jacinto Sobrante, La Sierra (Sepulveda), La Sierra (Yorba), Santa Rosa and San Jacinto Nuevo y Potrero in 1846.

New Mexican colonists founded the town of La Placita on the east side of the Santa Ana River at the northern extremity of what is now the city of Riverside in 1843.

When the initial 27 California counties were established in 1850, the area today known as Riverside County was divided between Los Angeles County and San Diego County. In 1853, the eastern part of Los Angeles County was used to create San Bernardino County. Between 1891 and 1893, several proposals and legislative attempts were put forth to form new counties in Southern California. These proposals included one for a Pomona County and one for a San Jacinto County. None of the proposals were adopted until a measure to create Riverside County was signed by Governor Henry H. Markham on March 11, 1893.[12]

County history[edit][]

The new county was created from parts of San Bernardino County and San Diego County. On May 2, 1893, seventy percent of voters approved the formation of Riverside County. Voters chose the city of Riverside as the county seat, also by a large margin. Riverside County was officially formed on May 9, 1893, when the Board of Commissioners filed the final canvass of the votes.[12]

Riverside County is the birthplace of lane markings, thanks to Dr. June McCarroll in 1915 when she suggested her idea to the state government.

The county is also the location of the March Air Reserve Base, one of the oldest airfields continuously operated by the United States military. Established as the Alessandro Flying Training Field in February 1918, it was one of thirty-two U.S. Army Air Service training camps established after the United States entry into World War I in April 1917. The airfield was renamed March Field the following month for 2d Lieutenant Peyton C. March, Jr., the recently deceased son of the then-Army Chief of Staff, General Peyton C. March, who was killed in an air crash in Texas just fifteen days after being commissioned. March Field remained an active Army Air Service, then U.S. Army Air Corps installation throughout the interwar period, later becoming a major installation of the U.S. Army Air Forces during World War II. Renamed March Air Force Base in 1947 following the establishment of the U.S. Air Force, it was a major Strategic Air Command (SAC) installation throughout the Cold War. In 1996, it was transferred to the Air Force Reserve Command and gained its current name as a major base for the Air Force Reserve and the California Air National Guard.[citation needed]

Riverside county was a major focal point of the Civil Rights Movements in the US, especially the African-American sections of Riverside and heavily Mexican-American communities of the Coachella Valley visited by Cesar Chavez of the farm labor union struggle.

Riverside county has also been a focus of modern Native American Gaming enterprises. In the early 1980s, the county government attempted to shut down small bingo halls operated by the Morongo Band of Cahuilla Mission Indians and the Cabazon Band of Mission Indians. The tribes joined forces and fought the county all the way to the U.S. Supreme Court, which ruled in the tribes' favor on February 25, 1987.[13] In turn, Congress enacted the Indian Gaming Regulatory Act in 1988 to establish a legal framework for the relationship between Indian gaming and state governments. Naturally, both tribes now operate large casinos in the county: the Morongo Casino, Resort & Spa and the Fantasy Springs Resort Casino adjacent to Spotlight 29 Casino.

The county's population surpassed one million people in 1990 (year-round, would be 1980 with seasonal residents) when the current trend of high population growth as a major real estate destination began in the 1970s. Once strictly a place for long distance commuters to L.A. and later Orange County, the county and city of Riverside started becoming more of a place to establish new or relocated offices, corporations and finance centers in the late 1990s and 2000s. More light industry, manufacturing and truck distribution centers became major regional employers in the county.[citation needed]

Geography[edit][]

According to the U.S. Census Bureau, the county has a total area of 7,303 square miles (18,910 km2), of which 7,206 square miles (18,660 km2) is land and 97 square miles (250 km2) (1.3%) is water.[14] It is the fourth-largest county in California by area. At roughly 180 miles (290 km) wide in the east-west dimension, the area of the county is massive. Riverside County, California is roughly the size of the State of New Jersey in total area. County government documents frequently cite the Colorado River town of Blythe as being a "three-hour drive" from the county seat, Riverside. Some view the areas west of San Gorgonio Pass as the Inland Empire portion of the county and the eastern part as either the Mojave Desert or Colorado Desert portion. There are probably at least three geomorphic provinces: the Inland Empire western portion, the Santa Rosa Mountains communities such as Reinhardt Canyon, and the desert region. Other possible subdivisions include tribal lands, the Colorado River communities, and the Salton Sea.

Demographics[edit][]

2011[edit][]

Places by population, race, and income[edit][]

2010[edit][]

Historical population
Census Pop.
1900 17,897
1910 34,696 93.9%
1920 50,297 45.0%
1930 81,024 61.1%
1940 105,524 30.2%
1950 170,046 61.1%
1960 306,191 80.1%
1970 459,074 49.9%
1980 663,166 44.5%
1990 1,170,413 76.5%
2000 1,545,387 32.0%
2010 2,189,641 41.7%
Est. 2019 2,470,546 [3] 12.8%
U.S. Decennial Census[27]

1790–1960[28] 1900–1990[29]
1990–2000[30] 2010–2018[2]

The 2010 United States Census reported that Riverside County had a population of 2,189,641. The racial makeup of Riverside County was 1,335,147 (61.0%) White (40.7% Non-Hispanic White), 140,543 (6.4%) African American, 23,710 (1.1%) Native American, 130,468 (6.0%) Asian (2.3% Filipino, 0.8% Chinese, 0.7% Vietnamese, 0.6% Korean, 0.5% Indian, 0.2% Japanese, 0.1% Cambodian, 0.1% Laotian, 0.1% Pakistani), 6,874 (0.3%) Pacific Islander, 448,235 (20.5%) from other races, and 104,664 (4.8%) from two or more races. Hispanic or Latino of any race were 995,257 persons (45.5%); 39.5% of Riverside County is Mexican, 0.8% Salvadoran, 0.7% Honduran, 0.6% Puerto Rican, 0.3% Cuban, and 0.2% Nicaraguan.[31]

2000[edit][]

As of the census[32] of 2000, there were 1,545,387 people, 506,218 households, and 372,576 families residing in the county. The population density was 214 people per square mile (83/km2). There were 584,674 housing units at an average density of 81 per square mile (31/km2). The racial makeup of the county was 65.6% White, 6.2% Black or African American, 1.2% Native American, 3.7% Asian, 0.3% Pacific Islander, 18.7% from other races, and 4.4% from two or more races. 36.2% of the population were Hispanic or Latino of any race. 9.2% were of German, 6.9% English, 6.1% Irish and 5.0% American ancestry according to Census 2000. 67.2% spoke English and 27.7% Spanish as their first language.

In 2006 the county had a population of 2,026,803, up 31.2% since 2000. In 2005 45.8% of the population was non-Hispanic whites. The percentages of African Americans, Asians and Native Americans remained relatively similar to their 2000 figures. The percentage of Pacific Islanders had majorly risen to 0.4. Hispanics now constituted 41% of the population.

There were 506,218 households, out of which 38.90% had children under the age of 18 living with them, 56.5% were married couples living together, 12.0% had a female householder with no husband present, and 26.4% were non-families. 20.7% of all households were made up of individuals, and 9.3% had someone living alone who was 65 years of age or older. The average household size was 3.0 and the average family size was 3.5.

In the county, the population was spread out, with 30.3% under the age of 18, 9.2% from 18 to 24, 28.9% from 25 to 44, 18.9% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 99.1 males. For every 100 females age 18 and over, there were 96.8 males.

The median income for a household in the county was $42,887, and the median income for a family was $48,409. Males had a median income of $38,639 versus $28,032 for females. The per capita income for the county was $18,689. About 10.7% of families and 14.2% of the population were below the poverty line, including 18.5% of those under age 18 and 7.6% of those age 65 or over.

Government and law enforcement[edit][]

Government[edit][]

Riverside County is organized as a General Law County under the provision of the California Government Code. The county has five supervisorial districts, and one supervisor is elected from each district every four years.[33]

Riverside County Historic Courthouse

In 1999, the County Board of Supervisors approved a multimillion-dollar planning effort to create the Riverside County Integrated Plan (RCIP) which was to encompass a completely new General Plan, regional transportation plan (CETAP) and Habitat Conservation Plan. The resultant General Plan adopted in 2003 was considered groundbreaking for its multidisciplinary approach to land use and conservation planning.[34][35]

Courts[edit][]

The Riverside Superior Court is the state trial court for Riverside County with 14 courthouses: Riverside Historic Courthouse, Riverside Hall of Justice, Riverside Family Law Court, Riverside Juvenile Court, Southwest Justice Center – Murrieta, Moreno Valley Court, Banning Court, Hemet Court, Corona Court, Temecula Court, Larson Justice Center – Indio, Indio Juvenile Court, Palm Springs Court and Blythe Court.[36]

The main courthouse is the Riverside Historic Courthouse. This landmark, erected in 1903, was modeled after the Grand and Petit Palais in Paris, France. The courthouse, designed by Los Angeles architects Burnham and Bliesner, has a classical design – including a great hall that connects all the departments (courtrooms).[37] In 1994, the courthouse was closed for seismic retrofits due to the 1992 Landers and 1994 Northridge earthquakes. The courthouse was reopened and rededicated in September 1998.[38]

Riverside County hands down 1 in 6 death sentences in the US, in spite of it having less than 1% of the population.[39]

Law enforcement[edit][]

Sheriff[edit][]

The Riverside County Sheriff provides court protection, jail administration, and coroner services for all of Riverside County. It provides patrol, detective, and other police services for the unincorporated areas of the county plus by contract to the cities and towns of Coachella, Eastvale, Indian Wells, Jurupa Valley, La Quinta, Lake Elsinore, Menifee, Moreno Valley, Norco, Palm Desert, Perris, Rancho Mirage, San Jacinto, Temecula and Wildomar.[40]

Municipal Police[edit][]

Municipal departments within the county are Banning, Beaumont, Blythe, Calimesa, Cathedral City, Corona, Desert Hot Springs, Hemet, Indio, Menifee, Murrieta, Palm Springs, Riverside, Riverside Community College.

Politics[edit][]

Voter registration[edit][]

Cities by population and voter registration[edit][]

Overview[edit][]

Riverside has historically been regarded as a Republican county in presidential and congressional elections. In 1932, it was one of only two counties (the other being Benton County, Oregon) on the entire Pacific coast of the United States to vote for Hoover over Roosevelt.[42] In 2008, Barack Obama narrowly carried the county, becoming the first Democrat to do so since Bill Clinton in 1992, and only the fourth to do so since Roosevelt's national landslide of 1936. In 2012, Obama again carried the county, this time with a plurality of the vote.

show

Presidential election results

In the United States House of Representatives, Riverside County is split between 4 congressional districts:[44]

  • California's 36th congressional district, represented by Democrat Raul Ruiz
  • California's 41st congressional district, represented by Democrat Mark Takano
  • California's 42nd congressional district, represented by Republican Ken Calvert and
  • California's 50th congressional district, seat currently vacant.

In the California State Senate, the county is split between 3 legislative districts:[45]

  • the 23rd Senate District, represented by Republican Mike Morrell,
  • the 28th Senate District, seat currently vacant, and
  • the 31st Senate District, represented by Democrat Richard Roth.

In the California State Assembly, the county is split between 7 legislative districts:[46]

  • the 42nd Assembly District, represented by Independent Chad Mayes,
  • the 56th Assembly District, represented by Democrat Eduardo Garcia,
  • the 60th Assembly District, represented by Democrat Sabrina Cervantes,
  • the 61st Assembly District, represented by Democrat Jose Medina,
  • the 67th Assembly District, represented by Republican Melissa Melendez,
  • the 71st Assembly District, represented by Republican Randy Voepel, and
  • the 75th Assembly District, represented by Republican Marie Waldron.

Riverside County voted 64.8% in favor of Proposition 8 which amended the California Constitution to ban same-sex marriages.[citation needed]

Crime[edit][]

The following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense.

Cities by population and crime rates[edit][]

Education[edit][]

Universities and colleges[edit][]

The 161-foot, 48-bell, carillon tower at the University of California, Riverside.

  • Brandman University, part of the Chapman University System[49] – Moreno Valley, Palm Desert, Riverside and Temecula
  • California Baptist University[50] – Riverside
  • California Southern Law School[51] – Riverside
  • California State University, San Bernardino, Palm Desert Campus[52] – Palm Desert
  • California State University, San Marcos, Temecula Satellite Campus[53] – Temecula
  • College of the Desert[54] – Palm Desert and Indio
  • La Sierra University[55] – Riverside
  • Mayfield College[56] – Cathedral City
  • Mt. San Jacinto College[57] – Banning, Menifee, San Jacinto, Temecula
  • Palo Verde College[58] – Blythe
  • Riverside Community College District[59]
    • Riverside City College
    • Moreno Valley College
    • Norco College
  • Santa Barbara Business College[60] – Palm Desert
  • University of California, Riverside[61] – Palm Desert and Riverside
  • University of Phoenix[62] – Murrieta and Palm Desert

Transportation[edit][]

Major highways[edit][]

See also: Mid County Parkway

  • I-10
  • I-10 Bus.
  • I-15
  • I-215
  • U.S. Route 95
  • Historic U.S. Route 99
  • Historic U.S. Route 395
  • State Route 60
  • State Route 62
  • State Route 71
  • State Route 74
  • State Route 78
  • State Route 79
  • State Route 86
  • State Route 91
  • State Route 111
  • State Route 177
  • State Route 243
  • State Route 371
  • County Route R3

Public transportation[edit][]

  • Riverside Transit Agency serves the western third of Riverside County, as far east as Banning.
  • SunLine Transit Agency serves Palm Springs and the Coachella Valley area.
  • Palo Verde Valley Transit Agency provides service in Blythe, near the Arizona border.
  • Pass Transit serves the San Gorgonio Pass communities.
  • Corona Cruiser serves the city of Corona.
  • Riverside County is also served by Greyhound buses.

Amtrak trains stop in Riverside and Palm Springs, and Amtrak California provides bus connections to the San Joaquins in Riverside, Beaumont, Palm Springs, Thousand Palms, Indio, Moreno Valley, Perris, Sun City, and Hemet.

Metrolink trains serve nine stations in Riverside County: Riverside-Downtown, Riverside-La Sierra, North Main-Corona, West Corona, Jurupa Valley/Pedley, Hunter Park/UCR, March Field-Moreno Valley, Perris-Downtown, and Perris-South.[63] These trains provide service to Orange, San Bernardino and Los Angeles counties seven days a week, with a primarily commuter-oriented schedule.

Airports[edit][]

Military air bases[edit][]

  • March Air Reserve Base (former March Air Force Base)

Commercial airports[edit][]

  • Palm Springs International Airport

General aviation airports[edit][]

  • Banning Municipal Airport
  • Bermuda Dunes Airport
  • Blythe Airport
  • Corona Municipal Airport
  • Flabob Airport, Riverside
  • French Valley Airport (Temecula Valley)
  • Hemet-Ryan Airport (San Jacinto Valley)
  • Jacqueline Cochran Regional Airport, Thermal (Coachella Valley)
  • Perris Valley Airport
  • Riverside Municipal Airport

Military installations[edit][]

  • Active
    • Chocolate Mountain Aerial Gunnery Range
    • March Air Reserve Base
    • Naval Weapons Station Seal Beach Detachment Norco
      • Naval Surface Warfare Center, Corona Division
  • Historical
    • Desert Training Center
      • Blythe Army Airfield
      • Desert Center Army Airfield
      • Palm Springs Army Airfield
      • Rice Army Airfield
      • Shaver's Summit Army Airfield[64]
      • Thermal Army Airfield (Also named Naval Air Facility Thermal (historical)[65])
    • Hemet Army Airfield

Points of interest[edit][]

See also: National Register of Historic Places listings in Riverside County, California

  • List of museums in the Inland Empire (California)
  • Gold Base, international headquarters of the Church of Scientology and Golden Era Productions[66][67]
  • Living Desert Zoo and Gardens
  • March Field Air Museum
  • Mission Inn
  • Orange Empire Railway Museum
  • Orocopia Mountains Wilderness
  • Palm Springs Desert Museum
  • Ramona Bowl, Home of The Ramona Pageant
  • Temecula Valley AVA Wine Region
  • Western Science Center

Communities[edit][]

Cities[edit][]

City Year

incorporated

Population,

2019[68]

Median household income,

2013[69]

Banning 1913 31,221 $36,509
Beaumont 1912 51,063 $69,151
Blythe 1916 19,682 $43,472
Calimesa 1990 9,160 $44,911
Canyon Lake 1990 11,280 $80,145
Cathedral City 1981 55,007 $46,282
Coachella 1946 45,743 $40,299
Corona 1896 169,868 $80,557
Desert Hot Springs 1963 28,878 $32,260
Eastvale 2010 64,157 $113,154
Hemet 1910 85,334 $29,679
Indian Wells 1967 5,470 $111,078
Indio 1930 91,765 $41,082
Jurupa Valley 2011 109,527 $61,250
Lake Elsinore 1888 69,283 N/A
La Quinta 1982 41,748 $67,444
Menifee 2008 94,756 $56,735
Moreno Valley 1984 213,055 $53,018
Murrieta 1991 116,223 $72,496
Norco 1964 26,604 $79,279
Palm Desert 1973 53,275 $50,267
Palm Springs 1938 48,518 $45,418
Perris 1911 79,291 $36,229
Rancho Mirage 1973 18,528 $76,261
Riverside 1883 331,360 $51,331
San Jacinto 1888 49,215 $44,851
Temecula 1989 114,761 $66,869
Wildomar 2008 37,229 $60,125

Unincorporated communities[edit][]

  • Aguanga
  • Alberhill
  • Alessandro
  • Anza
  • Arcilla
  • Arnold Heights
  • Belltown
  • Bermuda Dunes
  • Biskra Palms
  • Bly
  • Bonnie Bell
  • Box Springs
  • Cabazon
  • Cactus City
  • Cahuilla
  • Cahuilla Hills
  • Cherry Valley
  • Chiriaco Summit
  • Coronita
  • Crestmore Heights
  • Desert Beach
  • Desert Center
  • Desert Edge
  • Desert Palms
  • East Blythe
  • Eagle Valley
  • East Hemet
  • Edgement
  • El Cariso
  • El Cerrito
  • El Sobrante
  • Fern Valley
  • French Valley
  • Garnet
  • Gilman Hot Springs
  • Good Hope
  • Green Acres
  • Highgrove
  • Home Gardens
  • Homeland
  • Idyllwild
  • Indio Hills
  • La Cresta
  • Lake Mathews
  • Lake Riverside
  • Lake Tamarisk
  • Lakeland Village
  • Lakeview
  • Lost Lake
  • March ARB
  • Mead Valley
  • Meadowbrook
  • Mecca
  • Mesa Verde
  • Mortmar
  • Mountain Center
  • North Palm Springs
  • North Shore
  • Nuevo
  • Oasis
  • Pine Cove
  • Pinyon Pines
  • Radec
  • Rancho Capistrano
  • Ripley
  • River Bend Lodge
  • Romoland
  • Sage
  • Sky Valley
  • Snow Creek
  • Temescal Valley
  • Thermal
  • Thousand Palms
  • Valerie
  • Valle Vista
  • Vista Santa Rosa
  • Warm Springs
  • Whitewater
  • Winchester
  • Woodcrest

Ghost towns[edit][]

  • Alamo Bonito
  • Auld
  • Bergman
  • Caleb
  • Dos Palmas
  • Eagle Mountain
  • Eden[70]
  • Hell
  • La Placita
  • Leon
  • Midland
  • Pinacate
  • Saahatpa
  • Temescal
  • Terra Cotta
  • Willard
  • Willow Springs Station

Indian reservations[edit][]

Riverside County has 12 federally recognized Indian reservations, which ties it with Sandoval County, New Mexico for second most of any county in the United States. (Sandoval County, however, has two additional joint-use areas, shared between reservations. San Diego County, California has the most, with 18 reservations.)

  • Agua Caliente Indian Reservation
  • Augustine Indian Reservation
  • Cabazon Indian Reservation
  • Cahuilla Indian Reservation
  • Colorado River Indian Reservation (partly in La Paz County, Arizona and San Bernardino County, California)
  • Morongo Indian Reservation
  • Pechanga Indian Reservation
  • Ramona Village
  • Santa Rosa Indian Reservation
  • Soboba Band of Mission Indians
  • Torres-Martinez Indian Reservation (partly in Imperial County, California)
  • Twenty-Nine Palms Indian Reservation (partly in San Bernardino County)

Population ranking[edit][]

The population ranking of the following table is based on the 2010 census of Riverside County.[71]

 county seat

Rank City/Town/etc. Municipal type Population (2010 Census) 1  Riverside City 303,871
2 Moreno Valley City 193,365
3 Corona City 152,374
4 Murrieta City 103,466
5 Temecula City 100,097
6 Hemet City 78,657
7 Menifee City 77,519
8 Indio City 76,036
9 Perris City 68,386
10 Eastvale City 53,668
11 Lake Elsinore City 51,821
12 Cathedral City City 51,200
13 Palm Desert City 48,445
14 Palm Springs City 44,552
15 San Jacinto City 44,199
16 Coachella City 40,704
17 La Quinta City 37,467
18 Beaumont City 36,877
19 Jurupa Valley City 34,280
20 Wildomar City 32,176
21 Banning City 29,603
22 Norco City 27,063
23 Desert Hot Springs City 25,938
24 Agua Caliente Indian Reservation[72] AIAN 24,781
25 French Valley CDP 23,067
26 Temescal Valley CDP 22,535
27 Mira Loma (became part of Jurupa Valley in 2011) CDP 21,930
28 Blythe City 20,817
29 Glen Avon (became part of Jurupa Valley in 2011) CDP 20,199
30 Mead Valley CDP 18,510
31 East Hemet CDP 17,418
32 Rancho Mirage City 17,218
33 Valle Vista CDP 14,578
34 Woodcrest CDP 14,347
35 Pedley (became part of Jurupa Valley in 2011) CDP 12,672
36 El Sobrante CDP 12,669
37 Home Gardens CDP 11,570
38 Lakeland Village CDP 11,541
39 Canyon Lake City 10,561
40 Good Hope CDP 9,192
41 Mecca CDP 8,577
42 Calimesa City 7,879
43 Thousand Palms CDP 7,715
44 Garnet CDP 7,543
45 Bermuda Dunes CDP 7,282
46 Desert Palms CDP 6,957
47 Oasis CDP 6,890
48 Nuevo CDP 6,447
49 Cherry Valley CDP 6,362
50 Homeland CDP 5,969
51 Lake Mathews CDP 5,890
52 Torres-Martinez Reservation[73] AIAN 5,594
53 Sunnyslope CDP 5,153
54 El Cerrito CDP 5,100
55 Indian Wells City 4,958
56 Highgrove CDP 3,988
57 Idyllwild-Pine Cove CDP 3,874
58 Desert Edge CDP 3,822
59 North Shore CDP 3,477
60 Meadowbrook CDP 3,185
61 Anza CDP 3,014
62 Vista Santa Rosa CDP 2,926
63 Thermal CDP 2,865
64 Warm Springs CDP 2,676
65 Coronita CDP 2,608
66 Cabazon CDP 2,535
67 Winchester CDP 2,534
68 Sky Valley CDP 2,406
69 Lakeview CDP 2,104
70 Green Acres CDP 1,805
71 Colorado River Indian Reservation[74] AIAN 1,687
72 Romoland CDP 1,684
73 Lake Riverside CDP 1,173
74 March ARB CDP 1,159
75 Aguanga CDP 1,128
76 Mesa Verde CDP 1,023
77 Indio Hills CDP 972
78 Morongo Reservation[75] AIAN 913
79 Whitewater CDP 859
80 Cabazon Reservation[76] AIAN 835
81 Ripley CDP 692
82 Soboba Reservation[77] AIAN 482
83 Crestmore Heights CDP 384
84 Pechanga Reservation[78] AIAN 346
85 Desert Center CDP 204
86 Cahuilla Reservation[79] AIAN 187
87 Santa Rosa Reservation[80] AIAN 71
88 Mountain Center CDP 63
89 Romona Village[81] AIAN 13
90 Twenty-Nine Reservation[82] AIAN 12
91 Agustine Reservation[83] AIAN 11

most data is from here

https://en.wikipedia.org/wiki/Riverside_County,_California

Counties of California
Plumas County, Riverside County, Sacramento County
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