ZIP code · Luke · Maryland · United States
ZIP code 21540 — Luke
ZIP code 21540 serves Luke, Maryland.
- Postal code
- 21540Single source Value from one source, not cross-checked.
- City
- Luke
- County
- Allegany FIPS 24001
- State
- Maryland
- Country
- United States
- Coordinates
- 39.4774, -79.0594 — precision precise (locality)
View on OpenStreetMap - Population
- 93 (ZCTA, ACS 5-year)
- Population density
- 349 / sq mi
- Land area
- 0.3 sq mi (0.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $73,125
- Per-capita income
- $28,447
- Median age
- 44.3
- Households
- 37
- Housing units
- 55
- Median home value
- $50,000
- Median gross rent
- $638 / 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 21540 with another ZIP · ZIPs within 25 miles · distance from 21540
Map of ZIP code 21540
Climate — monthly normals
Warmest month Jul (avg high 89°F), coldest Jan (avg low 21°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 44 | 53 | 67 | 76 | 84 | 89 | 87 | 80 | 67 | 54 | 43 |
| Avg low °F | 21 | 22 | 28 | 37 | 47 | 56 | 61 | 59 | 52 | 40 | 31 | 25 |
| Precip in | 2.8 | 2.6 | 3.8 | 3.9 | 4.5 | 4.3 | 3.8 | 3.3 | 3.6 | 3.1 | 2.7 | 3.0 |
NOAA 1991–2020 climate normals from the nearest station: KEYSER 2 SSW (4.8 mi) · NOAA NCEI
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