Silver Spring, Maryland

Where Is Area Code 227?

Area code 227 is in Maryland and serves the same region as area code 240. It covers communities in the western and central part of the state, including Silver Spring in Montgomery County. The area is part of the North American Numbering Plan and uses Eastern Time.

Area code 227 serves a broad section of western Maryland and the Maryland suburbs of Washington, D.C. Major counties in the 240 and 227 service area include Montgomery, Prince George's, Frederick, Washington, Allegany, Charles, and St. Mary's counties. Major communities in this area include Silver Spring, Bethesda, Rockville, Gaithersburg, Frederick, Hagerstown, Waldorf, and Cumberland.

The region includes well-known places such as downtown Silver Spring, the National Harbor area in Prince George's County, and western Maryland mountain landscapes. It also includes parts of the Interstate 270 corridor and communities near the Potomac River. Silver Spring sits just north of Washington, D.C., and is one of the best-known population centers in the area.

History of Area Code 227

Area code 227 is a newer overlay area code in Maryland. The Maryland Public Service Commission approved 227 in 2022 as an overlay for the existing 240 area code region. This change added more phone numbers without changing existing 240 numbers.

Area code 240 was itself created in 1997 as a split from area code 301. The 227 overlay was added because the 240 and 301 numbering region needed more available numbers over time. Maryland began requiring 10-digit dialing in the overlay area before 227 numbers were assigned.

Key Facts About Area Code 227

• Area code 227 is in Maryland and is associated with Silver Spring in Montgomery County.
• Area code 227 is an overlay for area code 240, and both serve the same geographic region.
• Area code 227 was approved in 2022 by the Maryland Public Service Commission.
• Area code 227 serves communities in the Eastern Time Zone.
• The 227 and 240 service area includes Silver Spring, Bethesda, Rockville, Gaithersburg, Frederick, Hagerstown, Waldorf, and Cumberland.
• Area code 240 was created in 1997 as a split from Maryland's original 301 area code.
• The region served by 227 includes major institutions and landmarks such as downtown Silver Spring and the National Harbor area.
• The area code serves part of the Maryland suburbs of Washington, D.C., along with western Maryland communities.

Frequently Asked Questions

What state is area code 227 in?

Area code 227 is in Maryland.

What major cities use area code 227?

Area code 227 serves Silver Spring, Bethesda, Rockville, Gaithersburg, Frederick, Hagerstown, Waldorf, and Cumberland.

Is area code 227 a toll-free number?

No. Area code 227 is a geographic area code.