Find the last 4 digits (ZIP+4) for an address in 21641

ZIP 21641, Hillsboro, MD is filled in. Just type the street address.

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ZIP Code 21641 – Hillsboro, MD

Hillsboro, Maryland · Caroline County · Eastern time

ZIP code21641
CityHillsboro
StateMaryland
CountyCaroline County
Population127
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area0.14 sq mi
Center (lat, long)38.9170, -75.9418

Area codes in this area

410443667

These are the area codes that most often serve ZIP 21641 (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

21657 Queen Anne · 2.6 mi21660 Ridgely · 3.9 mi21625 Cordova · 4.2 mi21629 Denton · 7.4 mi21679 Wye Mills · 8.2 mi21639 Greensboro · 9 mi21636 Goldsboro · 10.3 mi21617 Centreville · 10.7 mi

About ZIP 21641

ZIP code 21641 is assigned to Hillsboro, Maryland. It lies in Caroline County. Its Census area covers about 0.14 square miles of land. The closest neighboring ZIP is 21657 (Queen Anne), about 2.6 miles away.

Every address in 21641 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