301 Area Code is part of 12 counties in the state of Maryland. There are around 101 cities in the 301 area code. The 301 area code is located in the EST timezone. Maryland has an avarage population of 5,657,438 spread between the coordinates of +39.063946 Latitude and -76.802101 Longitude.
Below you will find more info about 301 Area Code and also zip codes, counties, cities and the post offices that belong to this Area Code.