Zip Area Code

Cobb Island, Maryland

Cobb Island, Maryland, in Charles County, has ZIP code 20625 and area code 301, with overlays 227 and 240.

ZIP code
20625
Area codes
301, 227, 240
Time zone
Eastern Time
Coordinates
38.2620, -76.8502

ZIP codes in Cobb Island

ZIP codePost officeCountyArea codes
20625Cobb IslandCharles County301, 227, 240

Area codes for Cobb Island

  • Area code 301

    In service since 1947. Shares its area with 227 and 240. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 227

    In service since June 14, 2023. Shares its area with 240 and 301. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 240

    In service since June 1, 1997. Shares its area with 227 and 301. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Cobb Island is in the Eastern Time zone.

Towns near Cobb Island