Maryland is a U.S state situated in the Mid-Atlantic region of the United States. Annapolis is the capital and Baltimore is the largest city of Maryland. The nickname of Maryland is old line state. Maryland Zip Code started with the digit 2060. The total number of Maryland Zip Code approximately 603. The total population of Maryland about 6,045,680. So you can find any information about Maryland especially zip codes, area codes, Populations, cities, county and so on.