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