Irvine, California

• 1. Introduction

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  Irvine, California became an incorporated city only after residents voted for it on the 28th of December 1971. By June 2025, that vote had produced a place of 318,629 people, the second most populous city in Orange County. Before the vote, the same ground belonged to a single ranch, named in 1888 for its owner, James Irvine.

  In 1953, that ranch hosted the Boy Scouts of America's National Scout Jamboree. Among the scouts who camped there was a boy from Peoria, Illinois, named David Sills. Sills later returned to Irvine as an adult and served four terms as the city's mayor.

  How did one rancher's land become a city ranked fifth in population across the Greater Los Angeles region and 62nd nationwide? What shape did the planners who replaced the ranch give to its streets? And how did the politics of its residents shift over the decades that followed? The chapters ahead follow the ranch's owners, the architects who replaced them, and the residents who reshaped what they inherited.

• 2. Before The Boundaries

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  The Kizh, also known as the Gabrieleño, lived in the Irvine area for thousands of years before European contact. In 2024, a proposal emerged to build a village modeled on Putuidem Village, located in San Juan Capistrano. The University of California, Irvine adopted a Land Acknowledgment addressing the history of the land its campus occupies, and the many other immigrant groups who had also lived there.

  Gaspar de Portolá, a Spanish explorer, reached the area in 1769. His arrival led to the establishment of forts, missions, and cattle herds across the region. The King of Spain parceled out land for missions and for private use.

  Mexico won its independence from Spain in 1821. In 1833, the Mexican Congress passed a secularization act that stripped the missions of their land. The government then began distributing that land to citizens who applied for grants. Three Spanish and Mexican land grants, known as ranchos, made up what would become the Irvine Ranch. They were Rancho Santiago de Santa Ana, Rancho San Joaquín, and Rancho Lomas de Santiago.

  Those three ranchos would soon pass through the hands of American ranchers facing crushing debt.

• 3. From Ranch To Railroad

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  In 1864, José Andrés Sepúlveda sold 50,000 acres of Rancho San Joaquín to Benjamin and Thomas Flint, Llewellyn Bixby, and James Irvine for $18,000. Sepúlveda needed the money to settle debts left by the Great Drought. Two years later, in 1866, the same partners bought the 47,000-acre Rancho Lomas de Santiago for $7,000. Rancho Santiago de Santa Ana, meanwhile, had fallen into a tangle of disputed titles after the Mexican-American War. In 1868, a lawsuit split that rancho among the three partners: Flint, Bixby, and Irvine. They ran sheep across the combined land, though they allowed tenant farming beginning in 1870.

  James Irvine bought out his partners' interests in 1878 for $150,000. His holding then covered 110,000 acres, stretching 23 miles from the Pacific Ocean to the Santa Ana River. Irvine died in 1886, and his son, James Irvine II, inherited the ranch and incorporated it as the Irvine Company. James Irvine II shifted operations away from sheep and toward field crops, olives, and citrus.

  In 1888, the Santa Fe Railroad extended its line north of San Diego to Fallbrook Junction and named a new station after James Irvine. The town that grew around that station was instead called Myford, after Irvine's son, because a post office in Calaveras County already used the Irvine name. That town was renamed Irvine in 1914.

  By 1918-60,000 acres of the ranch were given over to growing lima beans, and within decades that farmland would be traded for subdivisions.

• 4. A City By Design

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  James Irvine II died in 1947 at the age of 80, and his son Myford took over as president of the Irvine Company. Myford began opening small sections of the family ranch to urban development. He died in 1959, the same year the University of California asked the company for 1,000 acres to build a new campus. The company sold the land, and the state later bought another 500 acres alongside it.

  William Pereira, the university's consulting architect, worked with Irvine Company planners to draft a master plan for a city built around that new campus, with room for 50,000 residents. The plan set aside land for industrial, residential, and recreational areas, along with commercial centers and greenbelts. Planners divided the community into townships called villages, laid out along two parallel main streets that both end at the university. The city describes that shape as a necklace, with the campus as its pendant. Only automobile travel was planned for; every other form of transportation was left out of the design.

  When residents eventually voted on incorporation, they approved a city substantially larger than Pereira's original plan. By January 1999, Irvine covered 43 square miles and counted 134,000 residents. In late 2003, after a legal battle that had run for ten years, Irvine annexed the former El Toro Marine Corps Air Station, adding 7.3 square miles to the city. That annexation also blocked a rival plan backed by Newport Beach residents. The plan would have built a new airport at El Toro to replace John Wayne Airport. The Orange County Great Park was later developed on the annexed land.

  Residential villages ended up flanked by two commercial districts, the Irvine Business Complex to the west and Irvine Spectrum to the east, districts that would soon draw employers of their own.

• 5. Boom Town Economy

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  Blizzard Entertainment employs 4,022 people in Irvine, according to 2021 figures. That makes it the city's second-largest employer, behind only the University of California, Irvine, which employs 18,373. Irvine Unified School District employs 3,897 people, and Edwards Lifesciences employs 3,152. Thales Group, an aerospace company, employs 1,084 people locally, the smallest of the city's ten largest employers.

  Dozens of companies keep their headquarters in Irvine, including Blizzard Entertainment, Broadcom Corporation, In-N-Out Burger, Taco Bell, Vizio, and Rivian. Irvine also hosts the North American headquarters of international firms such as Samsung Electronics' IT and printing division, Toshiba Corporation, Kia Motors, and Sega.

  The city runs a program called Destination Irvine to promote Irvine for vacations, meetings, and other business events. Irvine has been rated one of the top cities for start-up businesses, helping push Orange County into the top ten fastest-growing job markets nationally. The city government also grants free or low-cost filming permits, drawing film productions to shoot on location. Those jobs and permits would help draw a population whose makeup shifted dramatically over the decades that followed.

• 6. Shifting Faces

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  Irvine first appeared in the 1970 United States census with a population of 7,381. It was recorded as a city for the first time in the 1980 census, when white residents made up 87.8% of the population. That share fell to 77.9% in 1990-61.1% in 2000-50.5% in 2010, and 37.7% in 2020, before ticking up slightly to 40.1% by 2024. Over the same stretch, the Asian share of the population rose from 7.8% in 1980 to 45.4% by 2020, before easing to 39.8% in 2024.

  The 2020 census counted 307,670 residents, living at a density of 4,689.4 people per square mile. Of the city's 110,007 households, 51.6% were married couples, and 22.4% held just one person. The median age that year was 34.3, and for every 100 females there were 95.9 males. In 2023, the Census Bureau estimated Irvine's median household income at $129,647, with 8.6% of families living below the poverty line.

  Back in 2006, Irvine's median gross rent of $1,660 a month was the highest of any American place with over 100,000 people. By 2007, Census estimates ranked Irvine the seventh-richest city in the country among cities with at least 65,000 residents, with a median family income of $111,455.

  By 2024, Irvine's registered voters would tilt firmly toward one political party, a change with roots in exactly these demographic shifts.

• 7. From Red To Blue

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  Irvine voted for the Republican presidential candidate in every election from 1976 to 2004. The city's shift toward the Democratic Party began in 2008, alongside rapid growth in its Asian American population, which rose from 18% of residents in 1990 to 39% by 2010 and 45% by 2020. Nationally, Asian American support for Democratic presidential candidates rose from 36% in 1992 to 64% in 2008, a realignment mirrored in Irvine. More than 72% of Irvine residents hold college degrees. UC Irvine academics have pointed to that education level as another driver of the shift. They call Irvine an example of the diploma divide, in which highly educated communities lean Democratic.

  Since 2008, Irvine has voted Democratic in every presidential election, and Democratic in every gubernatorial election since 2014. As of an April 2026 report from the California Secretary of State, Irvine had 162,440 registered voters. Democrats held a 39.13% to 25.57% edge over Republicans, with 30.12% declining to state a party. By raw numbers, Irvine's Democratic registration advantage of 22,024 voters ranks third among Orange County cities, behind only Anaheim and Santa Ana.

  In the November 2025 special election, Irvine voters approved Proposition 50. The measure temporarily replaced the state's independent redistricting maps with ones drawn by the legislature. The measure passed in Irvine with 65.02% support. That was the second-highest level of support among Orange County cities, trailing only Santa Ana, and close to the statewide result of 64.42%.

  The current Irvine City Council includes five Democrats and two Republicans, with Democrat Larry Agran serving as mayor after his 2024 election. City elections remain officially nonpartisan, so candidates' party affiliations never appear on the ballot. The council members elected under this system now decide policy on everything from housing to the roads Irvine's residents drive every day.

• 8. Keeping It Moving

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  Streets that the city owns carry a signature mahogany-colored signage and connect by fiber optic line to Irvine's Traffic Research and Control Center, known as ITRAC. Traffic cameras and ground sensors feed that center, automatically adjusting signal timing so more vehicles can clear intersections without hitting red lights. Interstate 5, Interstate 405, and California State Routes 73, 133, 241, and 261 all run through the city. Major arteries are built wide and posted at 50 miles per hour or higher.

  In 2015, 5.0% of Irvine households had no car, a figure that fell to 4.0% in 2016, well below the national average of 8.7%. Households in Irvine averaged 1.83 cars in 2016, slightly above the national average of 1.8.

  The Orange County Transportation Authority runs 18 bus routes across 396 stops in Irvine, plus a specialty shuttle service called iShuttle with three routes. The city launched its own shuttle, Irvine CONNECT, in April 2024. It runs through Northwood, El Camino Real, Woodbridge, Oak Creek, and the Irvine Spectrum area, at roughly 20-minute intervals. Irvine Station, also called the Irvine Transportation Center, is served by Amtrak's Pacific Surfliner and by Metrolink's Orange County and Inland Empire-Orange County lines.

  Freight rail from the Atchison, Topeka and Santa Fe line, now BNSF, helped Irvine grow early on. The Venta Spur, built in the 1920s, moved citrus out of three processing plants in what is now Northwood. Those plants were essentially Irvine's first and biggest employers. The plants closed through the 1970s, and the spur itself was abandoned in 1985. In 1999, after the city received it as a donation, it became the Venta Spur bike trail. Irvine now maintains 113.2 miles of off-road bike trails and 286.4 miles of on-road bike lanes.

  That trail, born from a citrus spur laid down in the 1920s, still carries riders through Northwood today, tracing a route freight trains once used to move fruit instead of people.