The 301 area code covers Rockville, Gaithersburg, Frederick and more in Maryland. Provision a local 301 number in minutes.
Area code 301 is one of Maryland's original 1947 codes, covering the western suburbs of Washington DC including Montgomery and Prince George's Counties. These counties are among the most populous and prosperous in the US due to proximity to the federal government and its contractors. It now shares its territory with overlay code 240.
The 301 area code covers Rockville, Gaithersburg, Frederick, Waldorf in Maryland.
Phone numbers in the 301 area code operate on America/New_York time.
Yes. The 301 area code was introduced in 1947 and remains an active geographic code today.
Yes. Ajoxi provisions virtual 301 numbers with instant activation, clean caller-ID delivery, Tier-1 routing, and no setup fees — so you can build a local presence in minutes.
Provision a 301 number with instant activation, clean caller-ID, and Tier-1 routing — no setup fees, live in minutes.