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Rossmoor, California.

A community in Orange County, with no city government of its own. Zillow publishes no home prices for it: see Orange County’s.

Living in Rossmoor, Orange County, California

Rossmoor, in Orange County, had 10,625 people in the 2020 census. Half its households earn more than $211,597 a year and half less, against $116,289 across Orange County; 4% of its people live below the poverty line. 90% of its homes are lived in by their owners and 10% are rented. Unemployment in Orange County was 4.4% in August 2026, and the county had 0.1% more jobs in 2025 than the year before. The most residents work in schools and health care, then professional services.

People 10,625 in the 2020 census; median age 47.5
Household income $211,597 the median, give or take $35,560 · Orange County: $116,289
Unemployment 4.4% Orange County, August 2026; 4.6% a year before
Homes 90% lived in by their owners; 10% rented
  • 3,858households
  • 62%of adults have a degree
  • 4%below the poverty line
  • 28 mintypical commute
  • 27%work from home

What residents work in

  • Schools, hospitals and social care30%
  • Professional and business services13%
  • Banks, insurance and property12%
  • Restaurants, hotels and entertainment8%
  • Manufacturing7%
  • Building trades6%

Employed residents by industry, from the Census survey. Orange County had 1,663,220 jobs in 2025, 0.1% more than the year before (Bureau of Labor Statistics).

Weather through the year

Average daily high and low for each month: coldest in December, 67° and 47°; warmest in August, 83° and 66° 40° 50° 60° 70° 80° 90° J F M A M J J A 83° 66° S O N D 67° 47°
Average daily high and low for each month: coldest in December, 67° and 47°; warmest in August, 83° and 66° 40° 50° 60° 70° 80° 90° J F M A M J J A 83° 66° S O N D 67° 47°

Coldest in December, with highs near 67° and lows near 47°; warmest in August, with highs near 83° and lows near 66°. About 12 inches of rain and melted snow a year.

Average daily high and low, 1991–2020, at the Long Beach Daugherty Field weather station, 4 miles away (NOAA).

Largest workplaces in Orange County

  1. The Walt Disney CompanyAmusement parks39,185
  2. UC Irvine HealthHospitals13,011
  3. University of California-IrvineUniversity or college10,031
  4. Northgate GonzalezSupermarket and other grocery retailers9,262
  5. UCI Medical CenterGeneral hospital6,882FTE
  6. Hoag Memorial Hospital PresbyterianGeneral hospital5,259FTE
  7. Edwards LifesciencesCatheters manufacturing4,598
  8. Applied MedicalInstruments, mechanical microsurgical, manufacturing4,478

Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 2,209 workplaces with 20 or more staff, 428,272 people in all across the county; Rossmoor has none of its own. Colleges come from IPEDS (NCES, 2023–24) and hospitals from their Medicare cost reports (CMS, 2023); FTE marks full-time equivalent staff. Not listed: many offices and banks, which need not report to OSHA; military bases, whose staff OPM withholds; and, in about half the states, city and county governments.

Natural hazards

  1. Inland floodingRelatively high
  2. EarthquakesRelatively high

FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Rossmoor’s census tracts, against the rest of the country; all of them together, relatively moderate. It is meant for planning, not a substitute for a local risk assessment or a flood map: FEMA’s index.

From the U.S. Census Bureau’s 2020 census and its American Community Survey (2020–2024 five-year estimates), and the Bureau of Labor Statistics. A survey, so each figure has a margin of error, and figures it is not sure of are left out. More on Orange County.