State · United States

Maryland Postal Codes

—431 counties

Browse by county to find postal codes in Maryland.

Understanding postal codes in Maryland

Postal code format varies by country (often 4–6 digits; some use alphanumeric).

Select a county to explore postal codes.

State · United States

—431 counties

Browse by county to find postal codes in Maryland.

Postal code format varies by country (often 4–6 digits; some use alphanumeric).

Select a county to explore postal codes.