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Rossmoor, California

Coordinates: 33°47′20″N 118°4′47″W / 33.78889°N 118.07972°W / 33.78889; -118.07972
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Rossmoor, California
Location in Orange County and the state of California
Location in Orange County and the state of California
Coordinates: 33°47′20″N 118°4′47″W / 33.78889°N 118.07972°W / 33.78889; -118.07972
Country United States
State California
Named forRoss W. Cortese
 • Total1.538 sq mi (3.983 km2)
 • Land1.538 sq mi (3.983 km2)
 • Water0 sq mi (0 km2)  0%
Elevation13 ft (4 m)
 • Total10,625
 • Density6,900/sq mi (2,700/km2)
Time zoneUTC-8 (PST)
 • Summer (DST)UTC-7 (PDT)
ZIP code
Area code562
FIPS code06-63050
GNIS feature ID1661336

Rossmoor is a planned census-designated place located in Orange County, California. As of the 2020 census, the CDP had a total population of 10,625 up from the 2010 census population of 10,244. The gated Leisure World retirement community in the city of Seal Beach is to the south of Rossmoor, Los Alamitos is to the east and north, and Long Beach is to the west (on the other side of the San Gabriel River, the 605 freeway and the border with Los Angeles County). The community of Rossmoor has two shopping centers within its boundaries, but only one—the Rossmoor Village Square, is now within the political boundaries of Rossmoor. A larger shopping center, the Rossmoor Business Center, was annexed, despite many protests, by the City of Seal Beach in 1967. The Center has been remodeled several times and was renamed the Shops at Rossmoor in the early 2000s.


The Rossmoor community was developed from 1955 through 1961 by Ross W. Cortese, who had earlier developed the architecturally-significant Lakewood Rancho Estates in Long Beach (1953) and the Frematic Homes (1954) in Anaheim, just north and west of Disneyland. Cortese filed his first subdivision map for Rossmoor on October 20, 1956, and filed his thirteenth and final map on March 21, 1960.[3] Cortese's original partners in securing the first large parcels of land that would become Rossmoor included California governor Goodwin Knight and Judge Alfred Gittelson, who had also partnered with him in the Lakewood Rancho Estates and the Frematic homes. (It was Gittelson who later agreed to annex his Rossmoor Shopping Center property to Seal Beach in the late 1960s.) After Rossmoor, Cortese would construct the first of his very successful Leisure World gated retirement communities in that part of Seal Beach which is immediately south of Rossmoor. The Rossmoor community is easy to recognize because of its red brick "signature wall" that borders the entire unincorporated community. It is a signature of the Rossmoor community that differentiates it from neighboring cities Los Alamitos and Seal Beach.

There are 3,430 single family homes, 1 apartment complex (Accent Apartment Homes, originally Rossmoor Manor on Wallingsford Road), and 1 town house complex (Rossmoor Town Houses with addresses at 12100 Montecito Road or 3342 Bradbury Road) within Rossmoor.


According to a June 2006 consultant's report to the Rossmoor Planning Committee, the most cost effective solution for Rossmoor would be to be annexed by the city of Seal Beach.[4]

Although it is not part of the city of Los Alamitos, it is served under the Los Alamitos "sphere of influence" and was proposed to be annexed to the city by 2007 after the Local Agency Formation Commission reviews the proposal.[5]

Another proposal would combine Rossmoor with adjacent Seal Beach and Los Alamitos to form one city.[6]

Rossmoor is served by the Rossmoor/Los Alamitos Area Sewer District. The mainly residential area is also served by the Rossmoor Community Services District (CSD), which serves the community as an independent functionary does. The CSD provides services related to public recreation facilities and park development for Rush Park, Rossmoor Park, two mini parks and the Montecito Center. The CSD also administers street lighting, road rights-of-way services, and manages the street sweeping contract.[7] However, the Rossmoor CSD cannot make decisions about the future of the community, which is all delegated to the County of Orange's Unincorporated Islands Program and the Orange County Board of Supervisors.

At the May 22, 2008 meeting, OC LAFCO recommended that the Rossmoor Incorporation Plan go to a vote of the community. A vote by residents on the issue of incorporation was held on November 4, 2008. The proposition for cityhood was resoundingly defeated by a vote of 72% to 28% indicating that the majority of residents desire not be incorporated as a city. Residents also voted down three separate utility tax proposals by a wide margin.[8]

On February 19, 2021, Assembly Member Nguyen introduced AB-1246 Community services districts which would have made many "latent powers" available the Rossmoor Community Services District (Rossmoor CSD). The bill died at the desk in February 2022 never being sent to committee.


Rossmoor is east of where Coyote Creek meets the San Gabriel River, and northeast of the junction of Interstate 405, Interstate 605 and California State Route 22

Rossmoor is located at 33°47'20" North, 118°4'47" West (33.788917, -118.079721).[9] It borders the cities of Los Alamitos and Seal Beach.[10]

According to the United States Census Bureau, the CDP has a total area of 1.54 square miles (4.0 km2), all of it land.


According to the Köppen Climate Classification system, Rossmoor has a semi-arid climate (abbreviated BSh) with Mediterranean characteristics.


Historical population


At the 2010 census Rossmoor had a population of 10,244. The population density was 6,660.6 inhabitants per square mile (2,571.7/km2). The racial makeup of Rossmoor was 8,691 (84.8%) White (76.6% Non-Hispanic White),[12] 84 (0.8%) African American, 36 (0.4%) Native American, 838 (8.2%) Asian, 29 (0.3%) Pacific Islander, 168 (1.6%) from other races, and 398 (3.9%) from two or more races. Hispanic or Latino of any race were 1,174 persons (11.5%).[13]

The whole population lived in households, no one lived in non-institutionalized group quarters and no one was institutionalized.

There were 3,631 households, 1,382 (38.1%) had children under the age of 18 living in them, 2,456 (67.6%) were opposite-sex married couples living together, 326 (9.0%) had a female householder with no husband present, 138 (3.8%) had a male householder with no wife present. There were 90 (2.5%) unmarried opposite-sex partnerships, and 20 (0.6%) same-sex married couples or partnerships. 596 households (16.4%) were one person and 390 (10.7%) had someone living alone who was 65 or older. The average household size was 2.83. There were 2,920 families (80.4% of households); the average family size was 3.17.

The age distribution was 2,550 people (24.9%) under the age of 18, 738 people (7.2%) aged 18 to 24, 1,742 people (17.0%) aged 25 to 44, 3,444 people (33.6%) aged 45 to 64, and 1,770 people (17.3%) who were 65 or older. The median age was 45.5 years. For every 100 females, there were 92.4 males. For every 100 females age 18 and over, there were 90.0 males.

There were 3,710 housing units at an average density of 2,412.3 per square mile, of the occupied units 3,180 (87.6%) were owner-occupied and 451 (12.4%) were rented. The homeowner vacancy rate was 0.4%; the rental vacancy rate was 3.6%. 8,998 people (87.8% of the population) lived in owner-occupied housing units and 1,246 people (12.2%) lived in rental housing units.

According to the 2010 United States Census, Rossmoor had a median household income of $208,807, with 3.3% of the population living below the federal poverty line.[12]


At the 2000 census there were 10,298 people in 3,763 households, including 2,975 families, in the CDP. The population density was 6,583.8 inhabitants per square mile (2,542.0/km2). There were 3,763 housing units at an average density of 2,404.5 per square mile (928.4/km2). The racial makeup of the CDP was 88.88% White, 0.78% African American, 0.34% Native American, 5.72% Asian, 0.10% Pacific Islander, 1.36% from other races, and 2.83% from two or more races. 6.7% of the population were Hispanic or Latino of any race.[14] Of the 3,763 households 37.4% had children under the age of 18 living with them, 68.9% were married couples living together, 8.2% had a female householder with no husband present, and 19.9% were non-families. 16.6% of households were one person and 10.6% were one person aged 65 or older. The average household size was 2.77 and the average family size was 3.12.

The age distribution was 26.7% under the age of 18, 5.3% from 18 to 24, 23.4% from 25 to 44, 26.1% from 45 to 64, and 18.5% 65 or older. The median age was 42 years. For every 100 females, there were 94.2 males. For every 100 females age 18 and over, there were 89.6 males.

The median household income was $86,457 and the median family income was $93,500. Males had a median income of $71,875 versus $46,913 for females. The per capita income for the CDP was $38,642. 2.0% of the population and 1.3% of families were below the poverty line. 2.5% of those under the age of 18 and 1.3% of those 65 and older were living below the poverty line.



As of the 2020 redistricting, Rossmoor is in the 1st Supervisorial District in Orange County, represented by Republican Andrew Do. Because Rossmoor is an unincorporated area within Orange County, the Supervisor is the key local elected official.

In the state legislature Rossmoor is located in the 36th Senate District, represented by Republican Janet Nguyen, and in the 70th Assembly District, represented by Republican Tri Ta.[15]

Federally, Rossmoor is located in California's 45th congressional district, which is represented by Republican Michelle Steel.[16]


The Los Alamitos Unified School District serves Rossmoor.[17] Four of the six elementary schools of the district, Rossmoor, Weaver, Lee, and Hopkinson, are located within the boundaries of Rossmoor.

Notable people[edit]


  1. ^ "2010 Census U.S. Gazetteer Files – Places – California". United States Census Bureau.
  2. ^ "Rossmoor". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved November 20, 2014.
  3. ^ Friis, Leo J. (1965). Orange County Through Four Centuries. Santa Ana: Pioneer Press. p. 175.
  4. ^ "Article: News - Report analyzes cost of Rossmoor's future". www.ocregister.com. Archived from the original on June 29, 2006. Retrieved January 17, 2022.
  5. ^ "Orange County Local Agency Formation Commission". oclafco.ca.gov. Archived from the original on July 16, 2001. Retrieved January 17, 2022.
  6. ^ "News: New O.C. 'supercity' proposed - OCRegister.com". www.ocregister.com. Archived from the original on September 27, 2007. Retrieved January 17, 2022.
  7. ^ "History of Rossmoor". rossmoor-csd.org. Retrieved October 20, 2016.
  8. ^ "General Election". Archived from the original on December 2, 2008. Retrieved November 12, 2008.
  9. ^ "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.
  10. ^ "City Boundaries". Orange County GIS. Retrieved January 24, 2021.
  11. ^ "Census of Population and Housing (1790-2000)". U.S. Census Bureau. Retrieved July 17, 2010.
  12. ^ a b "Rossmoor CDP, California". U.S. Census Bureau. Retrieved May 22, 2015.
  13. ^ "2010 Census Interactive Population Search: CA - Rossmoor CDP". U.S. Census Bureau. Archived from the original on July 15, 2014. Retrieved July 12, 2014.
  14. ^ "U.S. Census website". United States Census Bureau. Retrieved January 31, 2008.
  15. ^ "California Districts". UC Regents. Retrieved January 9, 2023.
  16. ^ "California's 45th Congressional District - Representatives & District Map". Civic Impulse, LLC.
  17. ^ "District Attendance Boundaries Archived 2012-03-21 at the Wayback Machine." Los Alamitos Unified School District. Retrieved on September 28, 2012.

External links[edit]