Counties in MD

Browse county-level ZIP code records.

Allegany County
Maryland · 22 ZIPs Anne Arundel County
Maryland · 44 ZIPs Baltimore city
Maryland · 48 ZIPs Baltimore County
Maryland · 50 ZIPs Calvert County
Maryland · 14 ZIPs Caroline County
Maryland · 19 ZIPs Carroll County
Maryland · 10 ZIPs Cecil County
Maryland · 17 ZIPs Charles County
Maryland · 25 ZIPs Dorchester County
Maryland · 16 ZIPs Frederick County
Maryland · 32 ZIPs Garrett County
Maryland · 9 ZIPs Harford County
Maryland · 21 ZIPs Howard County
Maryland · 24 ZIPs Kent County
Maryland · 10 ZIPs Montgomery County
Maryland · 77 ZIPs Prince George's County
Maryland · 63 ZIPs Queen Anne's County
Maryland · 12 ZIPs Somerset County
Maryland · 11 ZIPs St Mary's County
Maryland · 1 ZIPs St. Mary's County
Maryland · 27 ZIPs Talbot County
Maryland · 16 ZIPs Washington County
Maryland · 24 ZIPs Wicomico County
Maryland · 19 ZIPs Worcester County
Maryland · 11 ZIPs