ZIP code · Westover · Maryland · United States
ZIP code 21871 — Westover
ZIP code 21871 serves Westover, Maryland.
- Postal code
- 21871Single source Value from one source, not cross-checked.
- City
- Westover
- County
- Somerset FIPS 24039
- State
- Maryland
- Country
- United States
- Coordinates
- 38.1010, -75.7406 — precision precise (locality)
View on OpenStreetMap - Population
- 1,635 (ZCTA, ACS 5-year)
- Population density
- 24 / sq mi
- Land area
- 67.1 sq mi (173.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $52,064
- Per-capita income
- $33,629
- Median age
- 58.2
- Households
- 733
- Housing units
- 851
- Median home value
- $201,500
- Median gross rent
- $950 / month
- Congressional district
- MD-1 (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)
Tools: compare 21871 with another ZIP · ZIPs within 25 miles · distance from 21871
Map of ZIP code 21871
Climate — monthly normals
Warmest month Jul (avg high 86°F), coldest Jan (avg low 30°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 46 | 49 | 55 | 64 | 73 | 81 | 86 | 84 | 79 | 69 | 59 | 51 |
| Avg low °F | 30 | 31 | 37 | 46 | 56 | 65 | 70 | 69 | 63 | 51 | 41 | 34 |
| Precip in | 3.1 | 2.8 | 3.9 | 3.1 | 3.2 | 3.4 | 4.4 | 4.3 | 4.3 | 4.0 | 2.9 | 3.8 |
NOAA 1991–2020 climate normals from the nearest station: WALLOPS ISLAND FLIGHT FAC (18.7 mi) · NOAA NCEI
Places in ZIP 21871
- 4 schools
- 1 restaurants & cafés
- 4 parks
- 5 playgrounds
- 6 post offices
- 12 places of worship
- 2 gas stations
- 4 police & fire stations
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