States · Maryland · Frederick County

Green Valley, Maryland.

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

Living in Green Valley, Frederick County, Maryland

Green Valley, in Frederick County, had 12,643 people in the 2020 census. Half its households earn more than $171,707 a year and half less, against $122,002 across Frederick County; 3% of its people live below the poverty line. 98% of its homes are lived in by their owners and 2% are rented. Unemployment in Frederick County was 3.3% in August 2026, and the county had 1.4% fewer jobs in 2025 than the year before. The most residents work in schools and health care, then professional services.

People 12,643 in the 2020 census; median age 40.9
Household income $171,707 the median, give or take $16,148 · Frederick County: $122,002
Unemployment 3.3% Frederick County, August 2026; 3.9% a year before
Homes 98% lived in by their owners; 2% rented
  • 4,246households
  • 50%of adults have a degree
  • 3%below the poverty line
  • 35 mintypical commute
  • 22%work from home

What residents work in

  • Schools, hospitals and social care20%
  • Professional and business services19%
  • Government13%
  • Building trades9%
  • Shops (retail)8%
  • Restaurants, hotels and entertainment7%

Employed residents by industry, from the Census survey. Frederick County had 106,962 jobs in 2025, 1.4% fewer than the year before (Bureau of Labor Statistics).

Weather through the year

Average daily high and low for each month: coldest in January, 39° and 24°; warmest in July, 84° and 66° 20° 40° 60° 80° J 39° 24° F M A M J J 84° 66° A S O N D
Average daily high and low for each month: coldest in January, 39° and 24°; warmest in July, 84° and 66° 20° 40° 60° 80° J 39° 24° F M A M J J 84° 66° A S O N D

Coldest in January, with highs near 39° and lows near 24°; warmest in July, with highs near 84° and lows near 66°. About 31 inches of snow and 48 inches of rain and melted snow a year.

Average daily high and low, 1991–2020, at the Damascus Ssw weather station, 5 miles away (NOAA).

Largest workplaces in Frederick County

  1. Frederick County Public SchoolsSchool district7,031FTE
  2. Frederick Memorial HospitalGeneral hospital2,071FTE
  3. Frederick National Laboratory for Cancer Research - Ft. DetrickLife sciences research and development laboratories or services1,273
  4. Frederick Community CollegeTwo-year college1,069
  5. AstraZeneca Frederick Manufacturing CenterCulture media manufacturing772
  6. Thermo Fisher ScientificGeneral warehousing and storage650
  7. NVRManufacturer of house componets645
  8. FRE - Aldi INC Maryland621

Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 208 workplaces with 20 or more staff, 25,121 people in all across the county; Green Valley has two 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 high
  2. Strong windRelatively moderate
  3. LightningRelatively moderate
  4. Heat wavesRelatively moderate

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