Maryland Postal Codes
Maryland, United States · 605 ZIP codes · 24 counties
Regions
Search by Map
Interactive map of zip codes in Maryland. Just click on the location you desire for a postal code/address for your mails destination.
How to find a ZIP Code in Maryland
Not having the right zip code for your postal mail would mean your letters will not reach their destination. Click the location on the map to find your needed postal code or choose the county in the links above for a list of the zip codes available in Maryland.
Maryland Postal Code Information
About Maryland Postal Codes
Maryland uses the US 5-digit ZIP code system to help deliver mail efficiently. Our database covers 605 ZIP codes across 24 counties in Maryland. The largest counties by ZIP-code volume include Allegany, Anne Arundel, Baltimore. Use our lookup tool to find the correct postal code for any address in Maryland.
For example, Cumberland in Allegany County is recorded with the ZIP code 21501. Every county in the list above links to its places and ZIP codes.
How to Use
1. Choose a county from the Regions list above
2. Click the location on the map for a postal code
3. Or use the search box at the top of the page
4. View the exact delivery area on the map
Frequently Asked Questions about Maryland ZIP Codes
How do I find a ZIP code in Maryland?
Choose a county from the Regions list above to see all its places and ZIP codes, or click any location on the interactive map to get the postal code and full address for that point.
How many ZIP codes are there in Maryland?
Our database contains 605 ZIP codes across 24 counties in Maryland, sourced from GeoNames.org and OpenStreetMap.
What is the ZIP code format in Maryland?
ZIP codes in Maryland follow the standard US 5-digit numeric format (or 9 digits with ZIP+4). The first digit represents a group of states.
