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667 Area Code

Area code 667 serves Baltimore, Columbia, Ellicott City, Glen Burnie, Dundalk and nearby communities in Maryland. It has been in service since March 24, 2012, when it was split from 443.

StateMaryland
Time zoneEastern
Local time now…
Prefixes in use451
Overlay with410, 443
Projected to run out2036
BaltimoreColumbiaEllicott CityGlen BurnieDundalkSevernBel Air SouthTowsonOdentonCatonsvilleEssexAnnapolisSeverna ParkRandallstownOwings MillsPikesvilleSalisburyPasadenaMilford MillMiddle RiverBel Air NorthEldersburgParkvilleCroftonPerry HallCarneyReisterstownLochearnIlchesterElkridgeEdgewoodArnoldCockeysvilleArbutusRosedaleWestminsterAberdeenLake ShoreParoleEastonFerndaleElktonBrooklyn ParkHavre de GraceMays ChapelRossvilleCambridgeLexington ParkJoppatowneCaliforniaRiviera BeachAnnapolis NeckOverleaOcean PinesHoneygoTimoniumLinthicumBel AirWhite MarshFort MeadeGarrisonFallstonChesapeake Ranch EstatesJessupCape St. ClaireLansdowneEdgemereStevensvilleBaltimore HighlandsMayoEdgewaterTaneytownOcean CityBowleys QuartersLuthervilleChesapeake BeachHampsteadRiversideFruitlandAbingdonBaltimoreColumbiaBel Air SouthOdenton
Cities and towns served by area code 667

Who issues 667 numbers

Mobile 31%VoIP and cable 38%Landline 30%

Share of the 451 prefixes (the three digits after 667) assigned to each type of carrier. Classification by carrier name, approximate.

CarrierPrefixes
Onvoy (Sinch)99
AT&T Mobility58
T-Mobile57
Core Communications41
Verizon Wireless24
Ton80 Communications21
Bandwidth16
Verizon Business (MCImetro)9

Cities and towns in area code 667

CityPopulationOther area codes
Baltimore569,997410, 443
Columbia105,871443, 410
Ellicott City73,737410, 443
Glen Burnie72,772410, 443
Dundalk65,441443, 410
Severn58,041410, 443
Bel Air South57,702443, 410
Towson57,683410, 443
Odenton45,585410, 443
Catonsville42,717410, 443
Essex40,670443, 410
Annapolis40,634443, 410
Severna Park39,499410, 443
Randallstown35,975443, 410
Owings Mills35,626443, 410
Pikesville34,253443, 410
Salisbury33,845410, 443
Pasadena32,717410, 443
Milford Mill31,939443, 410
Middle River31,616443, 410
Bel Air North31,599443, 410
Eldersburg30,626443, 410
Parkville30,423410, 443
Crofton29,878443, 410
Perry Hall28,908410, 443
Carney28,624410, 443
Reisterstown27,764443, 410
Lochearn27,591443, 410
Ilchester27,552410, 443
Elkridge26,183410, 443
Edgewood25,170443, 410
Arnold23,866410, 443
Cockeysville23,265410, 443
Arbutus20,869410, 443
Rosedale20,845443, 410
Westminster20,589443, 410
Aberdeen18,374443, 410
Lake Shore18,263410, 443
Parole17,910443, 410
Easton17,293410, 443

Showing the 40 largest of 80 places with 5,000+ residents.

Got a call from 667?

A 667 number was originally issued in Maryland, but that does not prove the caller is there. 38% of 667 prefixes belong to VoIP and cable providers, whose numbers can be bought online and used from anywhere. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.

All 451 prefixes in area code 667

Format: (667) XXX-YYYY. Carrier is the company the block was originally assigned to; numbers may since have been ported to another carrier.

Questions about area code 667

Where is area code 667?
Area code 667 is in Maryland. It covers Baltimore, Columbia, Ellicott City, Glen Burnie, Dundalk, Severn and 74 more cities and towns.
What time zone is area code 667?
Area code 667 is in the Eastern time zone.
Is 667 a toll-free number?
No. 667 is a geographic area code in Maryland. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
Why does 667 share its area with 410 and 443?
410, 443 and 667 form an overlay: they cover the same territory, so new numbers there can get any of these codes, and local calls need all 10 digits.
Will area code 667 run out of numbers?
NANPA's latest forecast projects the 410/443/667 overlay to exhaust in the first quarter of 2036. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.

Other area codes in Maryland