Area Code 667: Location, Coverage, and More - area-code -

Frequently Asked Questions

Area code 667 covers a large part of eastern Maryland, including Baltimore, Columbia, Glen Burnie, Ellicott City, Dundalk, and areas around them. This includes counties such as Anne Arundel, Baltimore, Carroll, Cecil, Harford, Howard, and more, ensuring service for a wide range of communities.
To call a 667 number from a different area code, you need to dial 1 + 10 digits (1-667-XXX-XXXX). This includes other Maryland area codes (410 and 301) and other parts of the North American Numbering Plan (NANP).
Area code 667 was added in 2012 to handle the increasing demand for phone numbers in the region, particularly due to growing cell phone use. The existing area codes, 410 and 443, were nearing capacity, so 667 was introduced as an overlay to ensure continued access to phone service for both homes and businesses.
For local calls within the 667 area code, always dial all 10 digits (667-XXX-XXXX), even if you're calling within the same city or town. Ten-digit dialing is mandatory for all local calls.
Area code 667 serves a significant portion of eastern Maryland, encompassing counties such as Anne Arundel, Baltimore, Carroll, Cecil, Harford, Howard, Queen Anne's, Talbot, Wicomico, Worcester, Calvert, Caroline, Dorchester, Somerset, and Kent. Baltimore City, with its large population, also falls within this area code.
To reach an operator from area code 667, dial 0 followed by the 10-digit number you want to call (0-667-XXX-XXXX). While operator assistance is less frequent today, it's still an option for certain needs.
Area code 667 supports various telecommunications services, including landlines, mobile services from major carriers like Verizon, AT&T, and T-Mobile, and VoIP (Voice over Internet Protocol). This gives residents and businesses several options for communication.
Yes, number portability lets you keep your current 667 number even if you switch phone companies. This gives you flexibility in choosing the best service provider without needing to change your established phone number.
Area code 667 acts as an overlay for area codes 410 and 443, both of which were already in use in Maryland. It was added because these existing area codes were running out of available numbers, particularly with the rise of mobile phone use.
For more details on Maryland area codes, you can check the North American Numbering Plan Administration (NANPA) website, the Maryland Public Service Commission site, or the Federal Communications Commission (FCC) website. These resources provide in-depth information on area code regulations and implementation.
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