ZIP code · Potomac · Maryland · United States
ZIP code 20854 — Potomac
ZIP code 20854 serves Potomac, Maryland.
- Postal code
- 20854Single source Value from one source, not cross-checked.
- City
- Potomac
- County
- Montgomery FIPS 24031
- State
- Maryland
- Country
- United States
- Coordinates
- 39.0388, -77.1922 — precision precise (locality)
View on OpenStreetMap - Population
- 49,694 (ZCTA, ACS 5-year)
- Population density
- 1,470 / sq mi
- Land area
- 33.8 sq mi (87.6 km²) (ZCTA, ACS 5-year)
- Median household income
- $250,000+
- Per-capita income
- $110,500
- Median age
- 47.6
- Households
- 16,542
- Housing units
- 17,119
- Median home value
- $1,105,300
- Median gross rent
- $3,180 / month
- Congressional district
- MD-8 (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 20854 with another ZIP · ZIPs within 25 miles · distance from 20854
Map of ZIP code 20854
Climate — monthly normals
Warmest month Jul (avg high 87°F), coldest Jan (avg low 27°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 42 | 45 | 54 | 66 | 74 | 82 | 87 | 85 | 78 | 66 | 56 | 46 |
| Avg low °F | 27 | 28 | 36 | 46 | 55 | 64 | 69 | 67 | 60 | 48 | 38 | 31 |
| Precip in | 3.1 | 2.6 | 3.7 | 3.2 | 3.5 | 4.0 | 4.0 | 3.0 | 4.0 | 3.5 | 3.3 | 3.4 |
NOAA 1991–2020 climate normals from the nearest station: ROCKVILLE 1 NE (4.9 mi) · NOAA NCEI
Places in ZIP 20854
- 32 schools
- 1 hospitals & clinics
- 4 doctors & dentists
- 2 pharmacies
- 4 supermarkets
- 45 restaurants & cafés
- 1 bars & pubs
- 32 parks
- 62 playgrounds
- 18 gyms & sports centres
- 1 libraries
- 2 post offices
- 23 places of worship
- 13 banks
- 7 gas stations
- 3 EV charging 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