Timonium, MD Area Codes
Timonium, Maryland (population 10,880) uses area codes 410, 443 and 667.
Timonium has no telephone exchange of its own in NANPA records; it is served by the Cockeysville exchange about 4.4 km away.
Carriers with Timonium numbers
32 prefixes are assigned to the Cockeysville exchange: 3% mobile, 25% VoIP and cable, 72% landline.
| Carrier | Prefixes |
|---|---|
| Verizon | 14 |
| Paetec Itel | 6 |
| Verizon Business (MCImetro) | 3 |
| AT&T (Teleport) | 3 |
| Lumen (Level 3) | 1 |
| Core Communications | 1 |
| Xo Maryland | 1 |
| Verizon Wireless | 1 |
Area codes used in Timonium
| Area code | Prefixes serving Timonium | Main carriers in this code |
|---|---|---|
| 410 | 16 | Verizon, Verizon Wireless, AT&T Mobility |
| 443 | 14 | Paetec Itel, Verizon Wireless, T-Mobile |
| 667 | 2 | Onvoy (Sinch), AT&T Mobility, T-Mobile |
Timonium phone number prefixes
Numbers starting with these first six digits were originally assigned to the Cockeysville exchange.
410-229Verizon410-316Verizon410-329Verizon410-403Verizon Business (MCImetro)410-498Paetec Itel410-527Verizon410-568AT&T (Teleport)410-584Verizon410-628Verizon410-666Verizon410-667Verizon410-683Verizon410-771Verizon410-773Verizon410-785Verizon410-891Verizon Business (MCImetro)443-281Verizon Business (MCImetro)443-318Paetec Itel443-330Paetec Itel443-353Verizon443-391Lumen (Level 3)443-428Core Communications443-541Paetec Itel443-556Verizon443-578Xo Maryland443-589Paetec Itel443-689Paetec Itel443-705Verizon Wireless443-886AT&T (Teleport)443-933AT&T (Teleport)667-318Bandwidth667-846Ton80 Communications
Nearby cities in area code 410
- Baltimore
- Columbia
- Ellicott City
- Glen Burnie
- Dundalk
- Severn
- Bel Air South
- Towson
- Odenton
- Catonsville
- Essex
- Annapolis
Questions
- What is the area code for Timonium, MD?
- Timonium 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 Timonium in?
- Timonium is in the Eastern time zone.