ZIP code · Keedysville · Maryland · United States
ZIP code 21756 — Keedysville
ZIP code 21756 serves Keedysville, Maryland.
- Postal code
- 21756Single source Value from one source, not cross-checked.
- City
- Keedysville
- County
- Washington FIPS 24043
- State
- Maryland
- Country
- United States
- Coordinates
- 39.4563, -77.6944 — precision precise (locality)
View on OpenStreetMap - Population
- 3,172 (ZCTA, ACS 5-year)
- Population density
- 136 / sq mi
- Land area
- 23.3 sq mi (60.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $91,836
- Per-capita income
- $49,790
- Median age
- 45.7
- Households
- 1,263
- Housing units
- 1,360
- Median home value
- $360,900
- Median gross rent
- $1,345 / month
- Congressional district
- MD-6 (119th Congress)
- USDA hardiness zone
- 7a (0 to 5 °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 21756 with another ZIP · ZIPs within 25 miles · distance from 21756
Map of ZIP code 21756
Climate — monthly normals
Warmest month Jul (avg high 86°F), coldest Jan (avg low 21°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 41 | 44 | 53 | 65 | 74 | 82 | 86 | 85 | 78 | 67 | 56 | 45 |
| Avg low °F | 21 | 23 | 29 | 39 | 49 | 58 | 62 | 61 | 54 | 42 | 32 | 25 |
| Precip in | 3.1 | 2.4 | 3.7 | 3.6 | 4.6 | 4.2 | 4.3 | 3.3 | 4.4 | 3.4 | 3.1 | 3.5 |
NOAA 1991–2020 climate normals from the nearest station: SHARPSBURG 5 S (4.2 mi) · NOAA NCEI
Places in ZIP 21756
- 4 parks
- 1 playgrounds
- 1 libraries
- 1 post offices
- 8 places of worship
- 1 EV charging 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