Zip Area Code

Area code 443

Area code 443 is a Maryland area code, in service since June 1, 1997.

It was added as an overlay on 410: both codes serve the same area, so neighbors can have numbers in either one.

667 serves the same area too.

Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

It is in the Eastern Time zone.

State
Maryland
In service since
June 1, 1997
Overlays
410, 667
Local dialing
ten digits; dialing 1 plus ten digits also works
Time zone
Eastern Time
ZIP codes
275

Map

Map of the 443 area codeThe shaded area shows where 443 numbers are rated, with the neighboring area codes outlined around it.856732609434540703757804301304610717302Bel AirAnnapolisTowsonCatonsvilleSalisburyEastonPrince Frederick
Approximate 443 coverage, drawn from U.S. Census ZIP code areas and NANPA rate centers. Dashed lines are state borders.

Main cities in area code 443

Overlays and neighboring area codes

Overlays, serving the same area: 410, 667.

Neighboring area codes: 856, 732, 609, 434, 540, 703, 757, 804, 301, 814, 304, 215, 610, 717, 302, 202.

Counties in area code 443

Towns in area code 443

And 276 more towns: every town in Maryland.

Local numbers in area code 443

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