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

Zip code
21529
21562
21540
21766
21521
21542
21503
21556
21504
21528
21532
21560
21530
21555
21750
21524
21505
21502
21539
21501
21557
21543
21545

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

Allegany 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 Allegany County County?

There are approximately 23 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Allegany 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.