100 Largest ZIP Codes in the United States by Population in Baltimore County, Maryland

Explore the 100 largest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Baltimore County, Maryland.

Rank	ZIP Code	City	State	Population
1	21234	PARKVILLE	MD	66,095
2	21222	DUNDALK	MD	60,013
3	21117	OWINGS MILLS	MD	58,516
4	21207	GWYNN OAK	MD	51,765
5	21228	CATONSVILLE	MD	50,268
6	21221	ESSEX	MD	43,822
7	21220	MIDDLE RIVER	MD	42,652
8	21244	WINDSOR MILL	MD	39,501
9	21093	LUTHERVILLE TIMONIUM	MD	38,961
10	21236	NOTTINGHAM	MD	38,632
11	21208	PIKESVILLE	MD	37,319
12	21227	HALETHORPE	MD	35,052
13	21136	REISTERSTOWN	MD	35,038
14	21133	RANDALLSTOWN	MD	32,070
15	21237	ROSEDALE	MD	30,983
16	21030	COCKEYSVILLE	MD	25,133
17	21286	TOWSON	MD	21,142
18	21204	TOWSON	MD	20,188
19	21128	PERRY HALL	MD	15,934
20	21219	SPARROWS POINT	MD	9,605
21	21131	PHOENIX	MD	7,722
22	21120	PARKTON	MD	7,319
23	21152	SPARKS GLENCOE	MD	6,517
24	21087	KINGSVILLE	MD	5,597
25	21013	BALDWIN	MD	5,382
26	21111	MONKTON	MD	4,838
27	21057	GLEN ARM	MD	4,530
28	21252	TOWSON	MD	4,456
29	21162	WHITE MARSH	MD	4,322
30	21155	UPPERCO	MD	3,063
31	21053	FREELAND	MD	3,051
32	21250	BALTIMORE	MD	2,959
33	21082	HYDES	MD	694
34	21153	STEVENSON	MD	676
35	21071	GLYNDON	MD	526
36	21052	FORT HOWARD	MD	438
37	21156	UPPER FALLS	MD	362
38	21051	FORK	MD	113
39	21023	BUTLER	MD	68
40	21105	MARYLAND LINE	MD	40
41	21031	HUNT VALLEY	MD	26
42	21285	TOWSON	MD	10