Howard County, Maryland

Howard County, Maryland, has 29 towns and 24 ZIP codes, in area codes 410 (overlay 443) and 301 (overlay 227).

Towns in Howard County, A to Z

Town	ZIP codes	Area codes
Annapolis Junction	20701	410, 443, 667
Ashton-Sandy Spring	nearest20777, 20860, 20861	301, 410, 227, 240, 443, 667
Clarksville	21029	410, 443, 667
Columbia	21044, 21045, 21046	410, 443, 667
Cooksville	21723	410, 443, 667
Dayton	21036	410, 443, 667
Dhs	20588	301, 227, 240
Eldersburg	nearest21104, 21784	410, 443, 667
Elkridge	21075	410, 443, 667
Ellicott	nearest21042, 21043, 21163	410, 443, 667
Ellicott City	21041, 21042, 21043	410, 443, 667
Fort Meade	nearest20701, 20724, 20755	410, 443, 667
Fulton	20759	410, 443, 667
Glenelg	21737	410, 443, 667
Glenwood	21738	410, 443, 667
Highland	20777	410, 443, 667
Ilchester	nearest21043, 21045, 21075	410, 443, 667
Jessup	20794	410, 443, 667
Laurel	20707, 20708, 20709, 20723, 20724, 20725 and more	301, 227, 240, 410, 443, 667
Lisbon	21765	410, 443, 667
Marriottsville	21104	410, 443, 667
Maryland	nearest20701, 20724, 20763	410, 443, 667
North Laurel	nearest20707, 20723, 20763	410, 301, 443, 667, 227, 240
Savage	20763	410, 443, 667
Scaggsville	nearest20707, 20723, 20759	410, 301, 443, 667, 227, 240
Simpsonville	21150	410, 443, 667
West Friendship	21794	410, 443, 667
West Laurel	nearest20707, 20723, 20866	301, 227, 240, 410, 443, 667
Woodbine	21797	410, 443, 667

ZIP codes in Howard County

20588Dhs301, 227, 240
20701Annapolis Junction410, 443, 667
20723Laurel410, 443, 667
20759Fulton410, 443, 667
20763Savage410, 443, 667
20777Highland410, 443, 667
20794Jessup410, 443, 667
21029Clarksville410, 443, 667
21036Dayton410, 443, 667
21041Ellicott City410, 443, 667
21042Ellicott City410, 443, 667
21043Ellicott City410, 443, 667
21044Columbia410, 443, 667
21045Columbia410, 443, 667
21046Columbia410, 443, 667
21075Elkridge410, 443, 667
21104Marriottsville410, 443, 667
21150Simpsonville410, 443, 667
21723Cooksville410, 443, 667
21737Glenelg410, 443, 667
21738Glenwood410, 443, 667
21765Lisbon410, 443, 667
21794West Friendship410, 443, 667
21797Woodbine410, 443, 667

Area codes in Howard County

Area code 410
In service since October 6, 1991. Shares its area with 443 and 667. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Area code 443
In service since June 1, 1997. Shares its area with 410 and 667. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
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.

Local numbers in area code 410

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