TheAcjachemen are the Indigenous people of Aliso Viejo, who lived in the area for thousands of years. The people established numerous villages alongAliso Creek as well dividing the Acjachemen and the Tongva.[5] With the arrival of settlers, the Acjachemen village sites would later become the southern areas of the Moulton Ranch.[6]
The planned community of Aliso Viejo's original 6,600 acres (2,700 ha) were once part of the 26,000-acre (11,000 ha) Moulton Ranch, owned by the Moulton family, who took title in the 1890s to land originally granted toJuan Avila by the Mexican government in 1842. Over the years, portions of the ranch were sold and becameLeisure World,Laguna Hills andLaguna Niguel.[7]
In 1976, theMission Viejo Company purchased the remaining 6,600 acres to create a new planned community – Aliso Viejo – with a master plan for 20,000 homes for a planned population of 50,000. The master plan was approved by theOrange County in 1979, and homes were first offered for sale in March 1982. Aliso Viejo's first family moved in that November. As part of the project, 2,600 acres (1,100 ha) were dedicated to Orange County as part of theAliso and Wood Canyons Wilderness Park, and 800 acres (320 ha) were set aside for local parks, recreation, schools and community facilities.[7]
The Aliso Viejo Community Association (AVCA) was set up to manage the local parks and community open space. It was the first community-wide association of its kind in California and has the unique ability to provide a full range of community services and facilities.[7]
Aliso Viejo was the first planned community in California to plan a balance between the projected resident work force and the number of projected jobs within its borders. Pacific Park, the centrally located 900-acre (360 ha) business park and town center, was expected to ultimately provide more than 22,000 jobs. Every home in Aliso Viejo was located within1+1⁄2 miles (2.4 km) of Pacific Park, to encourage live-and-work opportunities.[7]
Aliso Viejo had been an unincorporated community since 1979, and incorporated as a city in 2001 due to the efforts of the Aliso Viejo Cityhood 2000 Committee, which was responsible for introducing an initiative on the ballot for the 2001 special election. Voters passed the initiative with 93.3% in favor of incorporation.[8]Carmen Vali-Cave, the co-founder and president of the committee, became the new city's firstmayor.
The seal of the city of Aliso Viejo was adopted in 2001 at incorporation. The seal features several mountains, a sunset, a tree, and several buildings. Also, the seal features the slogan "July 2001", in celebration of the city's incorporation date.
Aliso Viejo is a general law city with acouncil-manager system of government. Day-to-day operations are handled by a professionalcity manager overseen by a volunteer city council. The City Council of Aliso Viejo consists of five members serving staggered four-year terms. Each year, the Council votes for its nextMayor andMayorpro tem. The current City Council consists of Mayor Mike Munzing, Mayor Pro-Tem Tiffany Ackley, and Council Members David C. Harrington, Ross Chun, and William Phillips .
Aliso Viejo is a swing city at the presidential level. According to theOrange County Registrar of Voters, as of May 15, 2025, Aliso Viejo has 33,064 registered voters.[12] Of those, 9,210 (33.25%) are registered Republicans, 8,800 (31.77%) are registered Democrats, and 8,388 (30.28%) havedeclined to state a political party/are independents.[13]
The Uniform Crime Report (UCR), collected annually by the FBI, compiles police statistics from local and state law enforcement agencies across the nation. The UCR records Part I and Part II crimes. Part I crimes become known to law enforcement and are considered the most serious crimes including homicide, rape, robbery, aggravated assault, burglary, larceny, motor vehicle theft, and arson. Part II crimes only include arrest data.[14] The 2023 UCR Data is listed below:
Aliso Viejo city, California – Racial and ethnic composition Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.
The median household income in 2023 was $137,970, and theper capita income was $64,689. About 3.0% of families and 5.2% of the population were below the poverty line.[44]
The2010 United States census[45] reported that Aliso Viejo had a population of 47,823. The population density was 6,400.4 inhabitants per square mile (2,471.2/km2). The racial makeup of Aliso Viejo was 34,437 (89.0%)White (77.8% Non-Hispanic White),[46] 967 (2.0%)African American, 151 (0.1%)Native American, 6,996 (14.6%)Asian, 89 (0.2%)Pacific Islander, 2,446 (5.1%) fromother races, and 2,737 (5.7%) from two or more races.Hispanic orLatino of any race were 8,164 persons (17.1%).
The Census reported that 47,354 people (99.0% of the population) lived in households, 450 (0.9%) lived in non-institutionalized group quarters, and 19 (0%) were institutionalized.
There were 18,204 households, out of which 7,095 (39.0%) had children under the age of 18 living in them, 9,358 (51.4%) wereopposite-sex married couples living together, 1,966 (10.8%) had a female householder with no husband present, 791 (4.3%) had a male householder with no wife present. There were 987 (5.4%)unmarried opposite-sex partnerships, and 206 (1.1%)same-sex married couples or partnerships. 4,416 households (24.3%) were made up of individuals, and 638 (3.5%) had someone living alone who was 65 years of age or older. The average household size was 2.60. There were 12,115families (66.6% of all households); the average family size was 3.16.
The population was spread out, with 12,395 people (25.9%) under the age of 18, 3,739 people (7.8%) aged 18 to 24, 17,138 people (35.8%) aged 25 to 44, 12,003 people (25.1%) aged 45 to 64, and 2,548 people (5.3%) who were 65 years of age or older. The median age was 35.1 years. For every 100 females, there were 92.8 males. For every 100 females age 18 and over, there were 89.2 males.
There were 18,867 housing units at an average density of 2,525.1 per square mile (974.9/km2), of which 11,049 (60.7%) were owner-occupied, and 7,155 (39.3%) were occupied by renters. The homeowner vacancy rate was 1.2%; the rental vacancy rate was 3.6%. 29,819 people (62.4% of the population) lived in owner-occupied housing units and 17,535 people (36.7%) lived in rental housing units.
Fluor, an international construction contractor forpetrochemical, infrastructure, and environmental projects, headquartered in Aliso Viejo until it was relocated to theDallas-Fort Worth Metroplex suburb ofIrving, Texas in March 2006. Some divisions still reside in Aliso Viejo.
TheAliso Viejo Library, a branch of the Orange County Public Library system, opened on January 31, 1998[48] and was closed for tenant improvements on April 15, 2024.[49]
Aliso Viejo Golf Course was designed by Nicklaus Design in 1999 and became theAliso Viejo Country Club with a redesign in 2005.[50]
Soka University of America was dedicated on May 3, 2001, with a 103-acre campus and 18 buildings, a $250 million (land and construction) project.[51]
Soka Performing Arts Center, a 1,000-seat concert hall with acoustics designed by Yasuhisa Toyota (who also designed Walt Disney Concert Hall); opened in September 2011.[52]