Baltimore County, located in the state of Maryland, contains a range of ZIP codes that are essential for mail delivery, demographics, mapping, and regional planning. Below is a complete list of ZIP codes associated with this county.

These ZIP codes help identify specific areas and communities within the county, ranging from small towns and villages to broader rural stretches. Whether you’re moving to Baltimore County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
21043
21022
21093
21162
21207
21210
21237
21282
21027
21020
21031
21053
21057
21087
21074
21128
21152
21221
21234
21236
21156
21284
21092
21136
21071
21102
21133
21206
21222
21228
21229
21250
21065
21030
21085
21111
21209
21212
21219
21153
21023
21105
21094
21117
21163
21208
21220
21131
21082
21241
21051
21120
21161
21215
21224
21227
21239
21286
21155
21235
21252
21013
21204
21225
21244
21104
21052
21139
21285

To know more about Baltimore County, click the button below:

Baltimore County Information

Use this tool to find your area details by using zip code.

ZIP Code to County

Note: Some ZIP codes may span across county borders and may be listed under more than one county. This is common in rural or low-population areas where ZIP code regions are broader.

Source: Data compiled from official county records, USPS ZIP code data, and the United States Census Bureau.

Frequently Asked Questions

How many ZIP codes are in Baltimore County County?

There are approximately 69 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Baltimore County overlap with other counties?

Yes, some ZIP codes may span more than one county. This is especially common in less populated or rural areas.