ZIP code · Elkton · Maryland · United States
ZIP code 21921 — Elkton
ZIP code 21921 serves Elkton, Maryland.
- Postal code
- 21921Single source Value from one source, not cross-checked.
- City
- Elkton
- County
- Cecil FIPS 24015
- State
- Maryland
- Country
- United States
- Coordinates
- 39.6264, -75.8458 — precision precise (locality)
View on OpenStreetMap - Population
- 45,698 (ZCTA, ACS 5-year)
- Population density
- 482 / sq mi
- Land area
- 94.7 sq mi (245.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $84,608
- Per-capita income
- $40,036
- Median age
- 39.1
- Households
- 17,493
- Housing units
- 18,782
- Median home value
- $296,000
- Median gross rent
- $1,413 / 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 21921 with another ZIP · ZIPs within 25 miles · distance from 21921
Map of ZIP code 21921
Climate — monthly normals
Warmest month Jul (avg high 89°F), coldest Jan (avg low 25°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 43 | 46 | 54 | 67 | 76 | 84 | 89 | 87 | 79 | 69 | 57 | 47 |
| Avg low °F | 25 | 25 | 33 | 42 | 52 | 62 | 66 | 65 | 58 | 46 | 36 | 30 |
| Precip in | 3.4 | 2.9 | 4.3 | 3.7 | 3.6 | 4.0 | 4.8 | 4.0 | 4.9 | 4.0 | 3.4 | 4.0 |
NOAA 1991–2020 climate normals from the nearest station: NEWARK AG FARM (6.1 mi) · NOAA NCEI
Places in ZIP 21921
- 22 schools
- 4 hospitals & clinics
- 15 doctors & dentists
- 3 pharmacies
- 7 supermarkets
- 59 restaurants & cafés
- 3 bars & pubs
- 21 parks
- 29 playgrounds
- 7 gyms & sports centres
- 1 libraries
- 3 post offices
- 44 places of worship
- 10 banks
- 24 gas stations
- 3 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