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

Zip code
20678
20714
20736
20688
20610
20639
20615
20657
20732
20676
20758
20685
20754
20629
20689

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

Calvert 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 Calvert County County?

There are approximately 15 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Calvert 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.