Local business phone numbers in Maryland

58 Maryland cities and towns with their area codes and NANPA-assigned exchanges.

Maryland at a glance

Maryland has 6 geographic area codes in service (227, 240, 301, 410, 443, and 667), 3,730 assigned central office codes across 165 rate centers, and 69 carriers holding codes, according to NANPA. Each city page lists its area codes, prefixes and carriers.

Cities and towns

Local-number pages for Maryland
Place	County	Population (2024)	Area codes	Exchanges
Baltimore	Baltimore city	568,271	301, 410, 443, 667	451
Frederick	Frederick County	89,537	227, 240, 301	88
Gaithersburg	Montgomery County	70,686	227, 240, 301	80
Hagerstown	Washington County	43,909	227, 240, 301	57
Annapolis	Anne Arundel County	40,689	410, 443, 667	92
Salisbury	Wicomico County	33,616	410, 443, 667	67
Westminster	Carroll County	20,662	410, 443, 667	28
Cumberland	Allegany County	18,643	227, 240, 301	31
Aberdeen	Harford County	18,451	410, 443, 667	44
Easton	Talbot County	17,381	410, 443, 667	26
Elkton	Cecil County	15,977	410, 443, 667	28
Havre de Grace	Harford County	15,222	410, 443, 667	8
Cambridge	Dorchester County	13,262	410, 443, 667	16
La Plata	Charles County	11,374	240, 301	11
Bel Air	Harford County	10,395	410, 443, 667	37
Mount Airy	Carroll County	9,914	227, 240, 301	8
Brunswick	Frederick County	9,015	227, 240, 301	5
Taneytown	Carroll County	8,293	410, 443, 667	5
Frostburg	Allegany County	6,972	240, 301	6
Ocean City	Worcester County	6,884	410, 443, 667	12
Walkersville	Frederick County	6,535	240, 301	5
Thurmont	Frederick County	6,308	227, 240, 301	5
Hampstead	Carroll County	6,288	410, 443, 667	9
Poolesville	Montgomery County	5,856	240, 301	8
Chestertown	Kent County	5,702	410, 443, 667	10
Berlin	Worcester County	5,349	410, 443, 667	9
Middletown	Frederick County	5,055	227, 240, 301	6
Denton	Caroline County	5,049	410, 443, 667	4
Leonardtown	St. Mary's County	5,041	227, 240, 301	28
Centreville	Queen Anne's County	4,771	410, 443, 667	9
Delmar	Wicomico County	4,748	410, 443, 667	7
Sykesville	Carroll County	4,622	410, 443, 667	17
Perryville	Cecil County	4,510	410, 443, 667	9
Pocomoke City	Worcester County	4,426	410, 443, 667	4
Indian Head	Charles County	4,247	240, 301	12
North East	Cecil County	4,191	410, 443, 667	8
Princess Anne	Somerset County	3,667	410, 443, 667	6
Smithsburg	Washington County	3,194	227, 240, 301	5
Emmitsburg	Frederick County	2,920	240, 301	4
Federalsburg	Caroline County	2,871	410, 443, 667	4
Rising Sun	Cecil County	2,777	410, 667	3
Crisfield	Somerset County	2,531	410, 443, 667	3
Snow Hill	Worcester County	2,243	410, 443, 667	3
North Beach	Calvert County	2,178	410, 443, 667	8
Williamsport	Washington County	2,102	240, 301	4
Hurlock	Dorchester County	2,093	410, 667	3
Greensboro	Caroline County	1,969	410, 667	4
Myersville	Frederick County	1,865	227, 240, 301	33
Oakland	Garrett County	1,813	227, 240, 301	15
Westernport	Allegany County	1,769	227, 240, 301	4
New Windsor	Carroll County	1,758	410, 443, 667	7
Ridgely	Caroline County	1,646	410, 667	3
New Market	Frederick County	1,609	240, 301	5
Hancock	Washington County	1,570	240, 301	5
Trappe	Talbot County	1,472	410, 443, 667	4
Keedysville	Washington County	1,229	227, 240, 301	7
Rock Hall	Kent County	1,200	410, 667	3
St. Michaels	Talbot County	1,073	410, 667	3

Places whose NANPA rate center could be matched to a Census place, with at least two exchanges. Sources: NANPA; Census Vintage 2024 estimates.