Baltimore County, Maryland ZIP Codes
- ZIP records
67 - Cities represented
41 - Sum of listed ZIP population estimates
1,414,366
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 21234 | Parkville | 66,334 |
| 2 | 21117 | Owings Mills | 62,816 |
| 3 | 21222 | Dundalk | 59,407 |
| 4 | 21215 | Baltimore | 52,229 |
| 5 | 21228 | Catonsville | 50,492 |
| 6 | 21206 | Baltimore | 48,902 |
| 7 | 21224 | Baltimore | 47,465 |
| 8 | 21207 | Gwynn Oak | 47,099 |
| 9 | 21229 | Baltimore | 46,679 |
| 10 | 21218 | Baltimore | 44,014 |
Cities in Baltimore County
- Baldwin
- Baltimore
- Butler
- Catonsville
- Cockeysville
- Curtis Bay
- Dundalk
- Essex
- Fork
- Fort Howard
- Freeland
- Glen Arm
- Glyndon
- Gwynn Oak
- Halethorpe
- Hunt Valley
- Hydes
- Kingsville
- Lutherville Timonium
- Maryland Line
- Middle River
- Monkton
- Nottingham
- Owings Mills
- Parkton
- Parkville
- Perry Hall
- Phoenix
- Pikesville
- Randallstown
- Reisterstown
- Rosedale
- Sparks Glencoe
- Sparrows Point
- Stevenson
- Towson
- Upper Falls
- Upperco
- White Marsh
- Windsor Mill
- Woodstock
ZIP Directory
- ZIP 21013
- ZIP 21023
- ZIP 21030
- ZIP 21031
- ZIP 21051
- ZIP 21052
- ZIP 21053
- ZIP 21057
- ZIP 21071
- ZIP 21082
- ZIP 21087
- ZIP 21093
- ZIP 21105
- ZIP 21111
- ZIP 21117
- ZIP 21120
- ZIP 21128
- ZIP 21131
- ZIP 21133
- ZIP 21136
- ZIP 21152
- ZIP 21153
- ZIP 21155
- ZIP 21156
- ZIP 21162
- ZIP 21163
- ZIP 21201
- ZIP 21202
- ZIP 21204
- ZIP 21205
- ZIP 21206
- ZIP 21207
- ZIP 21208
- ZIP 21209
- ZIP 21210
- ZIP 21211
- ZIP 21212
- ZIP 21213
- ZIP 21214
- ZIP 21215
- ZIP 21216
- ZIP 21217
- ZIP 21218
- ZIP 21219
- ZIP 21220
- ZIP 21221
- ZIP 21222
- ZIP 21223
- ZIP 21224
- ZIP 21226
- ZIP 21227
- ZIP 21228
- ZIP 21229
- ZIP 21230
- ZIP 21231
- ZIP 21233
- ZIP 21234
- ZIP 21236
- ZIP 21237
- ZIP 21239
- ZIP 21244
- ZIP 21250
- ZIP 21251
- ZIP 21252
- ZIP 21285
- ZIP 21286
- ZIP 21287
Browse all ZIP data for Maryland
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.