Baltimore, Maryland

Where Is Area Code 667?

Area code 667 serves Baltimore, Maryland, and nearby parts of central Maryland. It is part of the North American Numbering Plan and covers the same region as area codes 410 and 443. This area sits along the Chesapeake Bay and includes dense urban neighborhoods, older suburbs, and waterfront communities.

Area code 667 serves Baltimore City and parts of several surrounding counties. The coverage area includes Anne Arundel County, Baltimore County, Carroll County, Harford County, and Howard County. Major communities in the region include Baltimore, Annapolis, Towson, Columbia, and Bel Air.

Area code 667 covers a region with several well-known landmarks and institutions. Baltimore’s Inner Harbor, Fort McHenry, and the Port of Baltimore are inside the broader 410, 443, and 667 service area. The region also includes major campuses and employers such as Johns Hopkins University and the University of Maryland, Baltimore.

History of Area Code 667

Area code 667 was established on March 24, 2012, as an overlay for the same region served by area codes 410 and 443. The Maryland Public Service Commission approved the overlay to add more phone numbers as demand grew. New numbers in the region could then be assigned with 667 without changing existing 410 or 443 numbers.

Area code 410 first split from area code 301 in 1991. Area code 443 was later added in 1997 as an overlay for the 410 region. By 2012, continued growth in mobile phones, fax lines, and other services led to the addition of 667 as a third area code for the Baltimore area.

Key Facts About Area Code 667

• Area code 667 is in Maryland, and Baltimore is its main city.
• Area code 667 is an overlay area code that serves the same region as area codes 410 and 443.
• Area code 667 officially entered service on March 24, 2012.
• Area code 667 is in the Eastern Time Zone.
• Area code 667 serves Baltimore City and parts of Anne Arundel, Baltimore, Carroll, Harford, and Howard counties.
• Area code 667 covers parts of central and northeastern Maryland, including cities such as Baltimore, Annapolis, Columbia, Towson, and Bel Air.
• Major institutions in the 667 service area include Johns Hopkins University and the University of Maryland, Baltimore.
• The service area includes notable landmarks such as Baltimore’s Inner Harbor, Fort McHenry, and the Port of Baltimore.

Frequently Asked Questions

What state is area code 667 in?

Area code 667 is in Maryland.

What major cities use area code 667?

Major cities and communities in area code 667 include Baltimore, Annapolis, Columbia, Towson, and Bel Air.

Is area code 667 a toll-free number?

No. Area code 667 is a geographic area code for the Baltimore region in Maryland.