ZIP code · Midlothian · Maryland · United States
ZIP code 21543 — Midlothian
ZIP code 21543 serves Midlothian, Maryland.
- Postal code
- 21543Single source Value from one source, not cross-checked.
- City
- Midlothian
- County
- Allegany FIPS 24001
- State
- Maryland
- Country
- United States
- Coordinates
- 39.6343, -78.9500 — precision precise (locality)
View on OpenStreetMap - Population
- 325 (ZCTA, ACS 5-year)
- Population density
- 132 / sq mi
- Land area
- 2.5 sq mi (6.4 km²) (ZCTA, ACS 5-year)
- Per-capita income
- $47,526
- Median age
- 42.8
- Households
- 196
- Housing units
- 226
- Median home value
- $186,000
- Median gross rent
- $775 / month
- Congressional district
- MD-6 (119th Congress)
- USDA hardiness zone
- 6b (-5 to 0 °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 21543 with another ZIP · ZIPs within 25 miles · distance from 21543
Map of ZIP code 21543
Climate — monthly normals
Warmest month Jul (avg high 79°F), coldest Jan (avg low 19°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 37 | 46 | 59 | 68 | 75 | 79 | 78 | 72 | 60 | 49 | 38 |
| Avg low °F | 19 | 20 | 26 | 37 | 47 | 55 | 59 | 58 | 52 | 41 | 31 | 24 |
| Precip in | 3.4 | 3.0 | 4.0 | 4.0 | 5.2 | 4.6 | 3.7 | 3.5 | 4.2 | 3.3 | 2.9 | 3.4 |
NOAA 1991–2020 climate normals from the nearest station: FROSTBURG 2 (1.9 mi) · NOAA NCEI
Places in ZIP 21543
- 1 post offices
- 1 places of worship
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