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Catonsville, MD Area Codes

Catonsville, Maryland (population 42,717) uses area codes 410, 443 and 667.

Area code410
Area code443
Area code667
Time zoneEastern
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CatonsvilleBaltimoreColumbiaEllicott CityGlen BurnieDundalkSevernBel Air SouthTowsonOdentonEssexAnnapolisSeverna ParkCatonsville
Catonsville and nearby cities in area code 410

Carriers with Catonsville numbers

70 prefixes are assigned to the Catonsville exchange: 70% mobile, 10% VoIP and cable, 20% landline.

CarrierPrefixes
AT&T Mobility43
Verizon7
T-Mobile6
Paetec Itel4
Verizon Business (MCImetro)3
Lumen (Level 3)2
AT&T (Teleport)1
Onvoy (Sinch)1

Area codes used in Catonsville

Area codePrefixes serving CatonsvilleMain carriers in this code
41035Verizon, Verizon Wireless, AT&T Mobility
44322Paetec Itel, Verizon Wireless, T-Mobile
66713Onvoy (Sinch), AT&T Mobility, T-Mobile

Catonsville phone number prefixes

Numbers starting with these first six digits were originally assigned to the Catonsville exchange.

Nearby cities in area code 410

Questions

What is the area code for Catonsville, MD?
Catonsville uses 3 area codes: 410, 443 and 667. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is Catonsville in?
Catonsville is in the Eastern time zone.