States · California · Los Angeles County

Quartz Hill, California.

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

Living in Quartz Hill, Los Angeles County, California

Quartz Hill, in Los Angeles County, had 11,447 people in the 2020 census. Half its households earn more than $105,443 a year and half less, against $90,112 across Los Angeles County; 11% of its people live below the poverty line. 71% of its homes are lived in by their owners and 29% are rented. Unemployment in Los Angeles County was 4.5% in September 2026, and the county had about as many jobs in 2025 as the year before. The most residents work in schools and health care, then construction.

People 11,447 in the 2020 census; median age 37.5
Household income $105,443 the median, give or take $9,971 · Los Angeles County: $90,112
Unemployment 4.5% Los Angeles County, September 2026; 5.9% a year before
Homes 71% lived in by their owners; 29% rented
  • 3,829households
  • 18%of adults have a degree
  • 11%below the poverty line
  • 35 mintypical commute
  • 11%work from home

What residents work in

  • Schools, hospitals and social care24%
  • Building trades14%
  • Manufacturing14%
  • Shops (retail)11%
  • Professional and business services9%
  • Government7%

Employed residents by industry, from the Census survey. Los Angeles County had 4,525,460 jobs in 2025, about as many as the year before (Bureau of Labor Statistics).

Weather through the year

Average daily high and low for each month: coldest in December, 58° and 30°; warmest in August, 98° and 65° 20° 40° 60° 80° 100° J F M A M J J A 98° 65° S O N D 58° 30°
Average daily high and low for each month: coldest in December, 58° and 30°; warmest in August, 98° and 65° 20° 40° 60° 80° 100° J F M A M J J A 98° 65° S O N D 58° 30°

Coldest in December, with highs near 58° and lows near 30°; warmest in August, with highs near 98° and lows near 65°. About 7 inches of rain and melted snow a year.

Average daily high and low, 1991–2020, at the Lancaster Wm J Fox Field weather station, 6 miles away (NOAA).

Largest workplaces in Los Angeles County

  1. Los Angeles UnifiedSchool district55,137FTE
  2. University of California-Los AngelesUniversity or college28,794
  3. University of Southern CaliforniaUniversity or college17,428
  4. Cedars-sinai Medical CenterGeneral hospital17,201FTE
  5. Ronald Reagan UclaGeneral hospital8,588FTE
  6. Northrop Grumman SystemsGuided missile and space vehicle propulsion unit and propulsion unit parts manufacturing8,567
  7. Universal Studios HollywoodTheme parks, amusement7,857
  8. Space Exploration TechnologiesGuided missile and space vehicle manufacturing7,577

Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 5,360 workplaces with 20 or more staff, 1,023,254 people in all across the county; Quartz Hill has one of its own. School districts come from the Common Core of Data (NCES, 2023–24), colleges 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. EarthquakesRelatively high
  2. Inland floodingRelatively high

FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Quartz Hill’s census tracts, against the rest of the country; all of them together, relatively high. 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 Los Angeles County.