States · Virginia · Fairfax County

Greenbriar, Virginia.

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

Living in Greenbriar, Fairfax County, Virginia

Greenbriar, in Fairfax County, had 8,421 people in the 2020 census. Half its households earn more than $142,634 a year and half less, against $153,637 across Fairfax County; 5% of its people live below the poverty line. 67% of its homes are lived in by their owners and 33% are rented. Unemployment in Fairfax County was 3.3% in August 2026, and the county had 0.3% fewer jobs in 2025 than the year before. The most residents work in professional services, then schools and health care.

People 8,421 in the 2020 census; median age 40.4
Household income $142,634 the median, give or take $20,967 · Fairfax County: $153,637
Unemployment 3.3% Fairfax County, August 2026; 3.4% a year before
Homes 67% lived in by their owners; 33% rented
  • 3,009households
  • 60%of adults have a degree
  • 5%below the poverty line
  • 30 mintypical commute
  • 24%work from home

What residents work in

  • Professional and business services27%
  • Schools, hospitals and social care22%
  • Banks, insurance and property12%
  • Government9%
  • Restaurants, hotels and entertainment7%
  • Shops (retail)6%

Employed residents by industry, from the Census survey. Fairfax County had 634,638 jobs in 2025, 0.3% fewer than the year before (Bureau of Labor Statistics).

Weather through the year

Average daily high and low for each month: coldest in January, 43° and 25°; warmest in July, 88° and 67° 20° 40° 60° 80° J 43° 25° F M A M J J 88° 67° A S O N D
Average daily high and low for each month: coldest in January, 43° and 25°; warmest in July, 88° and 67° 20° 40° 60° 80° J 43° 25° F M A M J J 88° 67° A S O N D

Coldest in January, with highs near 43° and lows near 25°; warmest in July, with highs near 88° and lows near 67°. About 21 inches of snow and 43 inches of rain and melted snow a year.

Average daily high and low, 1991–2020, at the Washington Dc Dulles Airport weather station, 6 miles away (NOAA).

Largest workplaces in Fairfax County

  1. Fairfax County Public SchoolsSchool district28,829FTE
  2. Inova Fairfax HospitalGeneral hospital11,085FTE
  3. George Mason UniversityUniversity or college6,112
  4. J & J Worldwide ServicesBase facilities operation support services3,025
  5. Northern Virginia Community CollegeTwo-year college2,762
  6. MTSI Modern Tech SolutionsDefense contract engineering services2,334
  7. Clark Construction GroupAddition, alteration and renovation for-sale builders, commercial and institutional building2,204
  8. Hilton Worldwide Holdings, Inc.Hotels2,186

Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 664 workplaces with 20 or more staff, 129,174 people in all across the county; Greenbriar has one of its own. School districts come from the Common Core of Data (NCES, 2023–24), hospitals from their Medicare cost reports (CMS, 2023) and colleges from IPEDS (NCES, 2023–24); 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. Winter weatherRelatively moderate
  2. LightningRelatively moderate
  3. Heat wavesRelatively moderate
  4. Inland floodingRelatively moderate

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