Maryland Zip Codes and Metro Areas

Maryland is home to 6,170,738 residents across 368 zip codes with at least 1,000 people and 8 metro and micro areas. The capital is Annapolis, and the state is part of the South Atlantic division of the South. The median age is 39.3, with 22.3% of residents under 18 and 16.3% aged 65 and older.

Population

6,170,738

Median age

39.3

Housing units

2,545,532

Zip codes

368

with 1,000+ residents

Metro and micro areas

Age 65 and older

16.3%

Look Up a Zip Code in Maryland

Search 368 Maryland zip codes by number or town name, or browse by county. Each result shows population, income, housing costs, education, and age data from the U.S. Census Bureau.

Zip code or town

Browse by county

Largest Zip Codes in Maryland

The 25 most populous zip codes in Maryland. Select a zip code to see its full profile, or a column heading to sort.

Zip	Town	County	Population	Median income	Home value	Median age
20906	Silver Spring	Montgomery County	71,216	$92,964	$455,800	40.0
20878	Gaithersburg	Montgomery County	65,236	$142,062	$715,800	41.4
21234	Parkville	Baltimore County	65,010	$83,139	$288,100	40.7
21740	Hagerstown	Washington County	63,140	$59,410	$262,300	38.8
20874	Germantown	Montgomery County	62,233	$109,648	$399,000	37.8
21122	Pasadena	Anne Arundel County	61,589	$121,732	$425,800	39.1
21117	Owings Mills	Baltimore County	61,337	$100,934	$387,400	36.3
21222	Dundalk	Baltimore County	58,935	$61,934	$215,900	36.3
20904	Silver Spring	Montgomery County	57,244	$93,322	$560,000	40.1
21061	Glen Burnie	Anne Arundel County	56,453	$86,081	$339,100	36.1
20744	Fort Washington	Prince George	56,236	$124,838	$439,400	43.9
20902	Silver Spring	Montgomery County	53,170	$111,408	$551,200	37.0
20772	Upper Marlboro	Prince George	52,768	$135,576	$461,300	42.0
20774	Upper Marlboro	Prince George	52,221	$128,392	$455,300	41.9
21215	Baltimore	Baltimore city	52,078	$47,606	$201,200	40.3
20783	Hyattsville	Prince George	50,893	$87,052	$409,000	32.4
20850	Rockville	Montgomery County	50,365	$122,691	$714,400	40.8
21206	Baltimore	Baltimore city	49,901	$62,965	$216,100	36.5
20854	Potomac	Montgomery County	49,694	n/a	$1,165,400	47.6
21207	Gwynn Oak	Baltimore County	49,599	$64,284	$260,300	38.5
21228	Catonsville	Baltimore County	49,417	$107,714	$404,700	43.1
20852	Rockville	Montgomery County	47,857	$121,496	$665,200	38.7
21702	Frederick	Frederick County	47,437	$104,659	$426,300	37.6
21043	Ellicott City	Howard County	47,134	$141,846	$620,900	39.4
21224	Baltimore	Baltimore city	46,949	$86,209	$295,200	33.8

Highest-Income Zip Codes in Maryland

Brinklow (20862) has the highest median household income in Maryland at $242,721. The typical Maryland zip code has a median of $102,886.

Metro and Micro Areas in Maryland

Select an area to see its zip codes, income by zip code, and demographics.

Area	Type	Population	Median income	Median age	Zip codes
Baltimore-Columbia-Towson, MD	Metro	2,839,409	$97,300	38.9	143
Hagerstown-Martinsburg, MD-WV	Metro	298,525	$75,473	40.4	24
Lexington Park, MD	Metro	208,163	$123,577	38.5	27
Salisbury, MD	Metro	128,802	$69,592	36.6	15
Cumberland, MD-WV	Micro	94,684	$59,413	42.5	15
Ocean Pines, MD	Micro	53,279	$81,455	50.7	6
Easton, MD	Micro	37,707	$84,378	51.1	6
Cambridge, MD	Micro	32,612	$55,756	43.9	4

Age of Maryland Residents

The largest age group in Maryland is 35-44, with 829,671 residents. Groups are not equal widths.

Population by Race and Ethnicity

White residents make up the largest share of Maryland at 49.6%, followed by Black residents at 29.6%. Hispanic or Latino residents, who can be of any race, make up 12.1% of the population.

Source: U.S. Census Bureau, American Community Survey 5-year estimates. Hispanic or Latino residents can be of any race.