Geographic Regions and Area Codes

Area Code 227 is located in the western part of Maryland, covering the same geographic region as the 301 and 240 area codes. This area includes Maryland's portion of the Greater Washington, D.C. metro area, portions of southern Maryland, and rural western Maryland. The counties covered by Area Code 227 include:

  • Allegany
  • Charles
  • Garrett
  • Montgomery
  • Prince George's
  • St. Mary's
  • Washington
  • Most of Frederick County
  • Western Howard County
  • Parts of southwestern Carroll County and western Anne Arundel County

Major cities and towns in this area include Frederick, Hagerstown, Rockville, Silver Spring, and Bethesda. This diverse region offers a mix of urban, suburban, and rural environments, making it an attractive location for various types of businesses.