Where Is Area Code 443?
Area code 443 serves Baltimore and much of eastern Maryland. It covers the Baltimore metropolitan region, central Maryland communities, and Maryland’s Eastern Shore along the Chesapeake Bay and Atlantic coast. The calling area includes Baltimore City, Baltimore County, Anne Arundel County, Howard County, Harford County, Cecil County, and Eastern Shore counties.
Major communities include Annapolis, Columbia, Ellicott City, Bel Air, Aberdeen, Salisbury, Easton, Cambridge, and Ocean City. Notable landmarks in the area include Baltimore’s Inner Harbor, the National Aquarium, Johns Hopkins University, the University of Maryland, Baltimore, and the Maryland State House in Annapolis. The area also reaches coastal sites such as Assateague Island National Seashore in Worcester County.
Cities and Communities in the 443 Area Code
- Aberdeen, Harford County
- Annapolis, Anne Arundel County
- Baltimore, independent city
- Bel Air, Harford County
- Berlin, Worcester County
- Cambridge, Dorchester County
- Centreville, Queen Anne’s County
- Chestertown, Kent County
- Columbia, Howard County
- Crisfield, Somerset County
- Denton, Caroline County
- Easton, Talbot County
- Ellicott City, Howard County
- Elkton, Cecil County
- Fruitland, Wicomico County
- Glen Burnie, Anne Arundel County
- Havre de Grace, Harford County
- Ocean City, Worcester County
- Pocomoke City, Worcester County
- Princess Anne, Somerset County
- Salisbury, Wicomico County
- Snow Hill, Worcester County
- Stevensville, Queen Anne’s County
- Towson, Baltimore County
- Westminster, Carroll County
History of Area Code 443
Maryland used area code 301 statewide when the North American Numbering Plan began in 1947. In 1991, Maryland split area code 301, and area code 410 took Baltimore, the Eastern Shore, and other eastern parts of the state. The split responded to growing demand for telephone numbers.
Area code 443 entered service on July 1, 1997, as an overlay for area code 410. It did not divide the 410 territory, so both codes serve the same geographic region. Area code 667 joined 410 and 443 as a third overlay in 2012. These overlays allowed phone companies to assign new numbers without removing existing numbers, and local calling in the region uses 10-digit dialing.
Key Facts About Area Code 443
- Area code 443 is a geographic area code in Maryland, with Baltimore as its primary city.
- Area code 443 is located in the South Atlantic region of the United States Census Bureau.
- Area code 443 uses Eastern Time.
- Area code 443 entered service in 1997 as an overlay for area code 410.
- Area code 667 became a second overlay for the 410 and 443 region in 2012.
- The 443 calling area includes Baltimore, Annapolis, communities around Chesapeake Bay, and Maryland’s Eastern Shore.
- The region includes Johns Hopkins University, the University of Maryland, Baltimore, and the Maryland State House.
- The geographic area includes Baltimore’s Inner Harbor and coastal communities in Worcester County.
Frequently Asked Questions
What state is area code 443 in?
Area code 443 is in Maryland.
What major cities use area code 443?
Major places using area code 443 include Baltimore, Annapolis, Columbia, Salisbury, Easton, Cambridge, and Ocean City.
What time zone is area code 443 in?
Area code 443 is in the Eastern Time Zone.
Is area code 443 a toll-free number?
No. Area code 443 is a geographic area code, not a toll-free number.