Find the last 4 digits (ZIP+4) for an address in 20620

ZIP 20620, Callaway, MD is filled in. Just type the street address.

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ZIP Code 20620 – Callaway, MD

Callaway, Maryland · St. Mary's County · Eastern time

ZIP code20620
CityCallaway
StateMaryland
CountySt. Mary's County
Population1,115
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area4.29 sq mi
Center (lat, long)38.2331, -76.5218

Area codes in this area

227240301

These are the area codes that most often serve ZIP 20620 (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

20634 Great Mills · 1.4 mi20692 Valley Lee · 3.8 mi20619 California · 4.1 mi20667 Park Hall · 4.2 mi20653 Lexington Park · 5.1 mi20690 Tall Timbers · 5.2 mi20686 Saint Marys City · 5.8 mi20630 Drayden · 5.9 mi

About ZIP 20620

ZIP code 20620 is assigned to Callaway, Maryland. It lies in St. Mary's County. Its Census area covers about 4.29 square miles of land. The closest neighboring ZIP is 20634 (Great Mills), about 1.4 miles away.

Every address in 20620 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