ZIP code · Gaithersburg · Maryland · United States

ZIP code 20882 — Gaithersburg

ZIP code 20882 serves Gaithersburg, Maryland.

Postal code
20882
Single source Value from one source, not cross-checked.
City
Gaithersburg
County
Montgomery FIPS 24031
State
Maryland
Country
United States
Coordinates
39.2335, -77.1458 — precision precise (locality)
View on OpenStreetMap
Population
13,661 (ZCTA, ACS 5-year)
Population density
362 / sq mi
Land area
37.8 sq mi (97.8 km²) (ZCTA, ACS 5-year)
Median household income
$186,964
Per-capita income
$79,340
Median age
46.3
Households
4,602
Housing units
4,644
Median home value
$705,800
Median gross rent
$1,686 / month
Congressional districts
MD-8 (also MD-6) (119th Congress)
USDA hardiness zone
7b (5 to 10 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/New_York (UTC−5 / UTC−4 DST)
Area codes
240, 301, 227
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 84°F), coldest Jan (avg low 25°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F394352647380848376655344
Avg low °F252633435362666558473630
Precip in3.43.04.03.64.34.74.54.24.84.03.53.9

NOAA 1991–2020 climate normals from the nearest station: DAMASCUS 3 SSW (5.1 mi) · NOAA NCEI

Places in ZIP 20882

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page