ZIP Code 21085 – Joppa, MD
Joppa, Maryland · Harford County · Eastern time
| ZIP code | 21085 |
|---|---|
| City | Joppa |
| State | Maryland |
| County | Harford CountyBaltimore County |
| Population | 17,307 |
| Time zone | Eastern · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 18.97 sq mi |
| Center (lat, long) | 39.4459, -76.3570 |
Area codes in this area
These are the area codes that most often serve ZIP 21085 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 21085
ZIP code 21085 is assigned to Joppa, Maryland. It crosses 2 counties; most of its land is in Harford County. Its Census area covers about 18.97 square miles of land. The closest neighboring ZIP is 21156 (Upper Falls), about 2.8 miles away.
Every address in 21085 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources