USA Zip Code Finder

Maryland ZIP Codes

Maryland ZIP codes cover major cities like Baltimore, Annapolis, Silver Spring, and rural areas across the state’s counties. ZIP codes starting with 206–219 are unique to Maryland.

Quick Facts

  • Total ZIP Codes: 487
  • Largest City: Baltimore
  • ZIP Range: 20601 – 21930
  • Area Codes: 240, 301, 410, 443, 667

Population Highlights

  • Baltimore Metro: ~2.8M
  • Washington Suburbs: ~5.0M
  • Annapolis Metro: ~0.45M

Major Counties

  • Baltimore: 21201–21298
  • Montgomery: 20701–20899
  • Anne Arundel: 21001–21499
  • Prince George's: 20701–20799

Regional ZIP Distribution

  • Western MD: 20601–21562
  • Central MD: 21001–21499
  • Eastern Shore: 21601–21930

Area Codes

  • 240, 301, 410, 443, 667: Entire state

Transportation & Landmarks

  • BWI Airport, Baltimore/Washington Intl
  • Major Highways: I-95, I-70, US-50
  • Landmarks: Fort McHenry, Chesapeake Bay Bridge

Notable ZIP Codes

Some ZIP codes in Maryland are especially significant. 21201 covers downtown Baltimore, 21401 is central Annapolis, and 20814 covers Silver Spring. Rural ZIP codes include 21901 and 21501.

Maryland ZIP Code Directory

ZIP Code ▲ Common City ▲

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