Zip Area Code

Southern Md Facility, Maryland

Southern Md Facility, Maryland, in Prince George's County, has ZIP codes 20697 and 20797 and area code 301, with overlays 227 and 240.

ZIP codes
20697, 20797
Area codes
301, 227, 240
Time zone
Eastern Time
Coordinates
38.8336, -76.8777

ZIP codes in Southern Md Facility

ZIP codePost officeCountyArea codes
20697*Southern Md FacilityPrince George's County301, 227, 240
20797*Southern Md FacilityPrince George's County301, 227, 240

* No mapped delivery area: P.O. boxes or a single organization. Area codes are those of the nearest ZIP code area.

Area codes for Southern Md Facility

  • 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

Southern Md Facility is in the Eastern Time zone.

Towns near Southern Md Facility