ZIP code · Aberdeen · Maryland · United States
ZIP code 21001 — Aberdeen
ZIP code 21001 serves Aberdeen, Maryland.
- Postal code
- 21001Single source Value from one source, not cross-checked.
- City
- Aberdeen
- County
- Harford FIPS 24025
- State
- Maryland
- Country
- United States
- Coordinates
- 39.5109, -76.1805 — precision precise (locality)
View on OpenStreetMap - Population
- 26,121 (ZCTA, ACS 5-year)
- Population density
- 872 / sq mi
- Land area
- 30 sq mi (77.6 km²) (ZCTA, ACS 5-year)
- Median household income
- $81,778
- Per-capita income
- $40,698
- Median age
- 37.7
- Households
- 10,581
- Housing units
- 11,010
- Median home value
- $267,400
- Median gross rent
- $1,391 / 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 21001 with another ZIP · ZIPs within 25 miles · distance from 21001
Map of ZIP code 21001
Climate — monthly normals
Warmest month Jul (avg high 86°F), coldest Jan (avg low 25°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 42 | 44 | 53 | 65 | 73 | 82 | 86 | 84 | 78 | 67 | 56 | 46 |
| Avg low °F | 25 | 27 | 33 | 43 | 53 | 62 | 68 | 66 | 59 | 47 | 37 | 30 |
| Precip in | 3.3 | 2.8 | 4.1 | 3.5 | 4.0 | 4.3 | 4.8 | 4.2 | 4.8 | 4.2 | 3.3 | 3.9 |
NOAA 1991–2020 climate normals from the nearest station: ABERDEEN PHILLIPS FLD (2.8 mi) · NOAA NCEI
Places in ZIP 21001
- 8 schools
- 1 colleges & universities
- 7 hospitals & clinics
- 10 doctors & dentists
- 2 pharmacies
- 4 supermarkets
- 60 restaurants & cafés
- 2 bars & pubs
- 12 parks
- 34 playgrounds
- 2 gyms & sports centres
- 1 libraries
- 1 post offices
- 34 places of worship
- 8 banks
- 21 gas stations
- 9 EV charging stations
- 5 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