Montgomery 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 Montgomery County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
20815
20816
20841
20842
20906
20777
20884
20818
20852
20914
20915
21771
20880
20918
20849
20911
20859
20993
20854
20868
20871
20882
20838
20898
20830
20892
20783
20832
20861
20903
21770
20862
20811
20817
20874
20851
20860
20901
20902
20899
20827
20812
20847
20839
20857
20058
20707
20787
20853
20855
20872
20875
20878
20886
20891
20912
20824
20885
20907
20825
20883
20894
20837
20904
20895
20879
20877
20910
20913
20848
20896
20889
20916
20810
20814
20850
20833
20876
20866
20905
21797
20207

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

Montgomery 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 Montgomery County County?

There are approximately 82 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Montgomery 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.