Find the last 4 digits (ZIP+4) for an address in 21655

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ZIP Code 21655 – Preston, MD

Preston, Maryland · Caroline County · Eastern time

ZIP code21655
CityPreston
StateMaryland
CountyCaroline CountyDorchester County
Population5,053
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area52.72 sq mi
Center (lat, long)38.7450, -75.9128

Area codes in this area

410443667

These are the area codes that most often serve ZIP 21655 (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

21609 Bethlehem · 2.5 mi21643 Hurlock · 7.2 mi21632 Federalsburg · 7.6 mi21625 Cordova · 9 mi21629 Denton · 9.2 mi21664 Secretary · 9.7 mi21601 Easton · 10 mi21673 Trappe · 10 mi

About ZIP 21655

ZIP code 21655 is assigned to Preston, Maryland. It crosses 2 counties; most of its land is in Caroline County. Its Census area covers about 52.72 square miles of land. The closest neighboring ZIP is 21609 (Bethlehem), about 2.5 miles away.

Every address in 21655 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