Maryland ZIP Codes
United States · 605 codes
Maryland has 605 ZIP codes, from 20588 to 21930, serving 605 places in 24 counties. Choose a county to see every code and place.
Countys of Maryland
- Allegany21501–21766
- Anne Arundel20711–21412
- Baltimore21013–21286
- Baltimore (city)21201–21298
- Calvert20610–20754
- Caroline21609–21670
- Carroll21048–21797
- Cecil21901–21930
- Charles20601–20695
- Dorchester21613–21869
- Frederick21701–21798
- Garrett21520–21561
- Harford21001–21161
- Howard20588–21794
- Kent21610–21678
- Montgomery20810–20997
- Prince George's20607–20913
- Queen Anne's21607–21690
- Somerset21817–21890
- St. Mary's20606–20692
- Talbot21601–21679
- Washington21711–21795
- Wicomico21801–21875
- Worcester21811–21872
Frequently asked questions
How many ZIP codes are there in Maryland?
605 ZIP codes for 605 places in 24 counties.
What is the ZIP code range of Maryland?
ZIP codes in Maryland run from 20588 to 21930 in this list.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.