ZIP codes in Maryland
280 ZIP codes across 115 cities in Maryland. Pick a city or search a specific code.
Cities in Maryland
Baltimore 42Silver Spring 16Bethesda 11Gaithersburg 9Rockville 8Bowie 7Frederick 6Waldorf 4Columbia 3Ellicott City 3Germantown 3Glen Burnie 3
ZIP codes in Maryland — notes
ZIP codes in Maryland begin with prefixes such as 20, 21. Each code is tied to a primary post office or delivery area, so a single ZIP may cover more than one census place. Use the search box above for any specific code.