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The Data MineDownload 2010 Zip Code Maps Shape Files
- State of Maryland
- Allegany County
- Anne Arundel County
- Baltimore County
- Calvert County
- Caroline County
- Carroll County
- Cecil County
- Charles County
- Dorchester County
- Frederick County
- Garrett County
- Harford County
- Howard County
- Kent County
- Montgomery County
- Prince George's County
- Queen Anne's County
- St. Mary's County
- Somerset County
- Talbot County
- Washington County
- Wicomico County
- Worcester County
- Baltimore City
2010 Zip Code Maps in PDF FormatIf you can not find the county from the list. It's because zip code maps for those counties are not available.