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Green Valley, MD Area Codes
Green Valley, Maryland (population 13,187) uses area codes 240 and 301.
Green Valley has no telephone exchange of its own in NANPA records; it is served by the New Market exchange about 6.2 km away.
Carriers with Green Valley numbers
5 prefixes are assigned to the New Market exchange: 0% mobile, 60% VoIP and cable, 40% landline.
| Carrier | Prefixes |
|---|---|
| Onvoy (Sinch) | 1 |
| Telnyx | 1 |
| AT&T (Teleport) | 1 |
| Verizon | 1 |
| Core Communications | 1 |
Area codes used in Green Valley
| Area code | Prefixes serving Green Valley | Main carriers in this code |
|---|---|---|
| 240 | 3 | T-Mobile, Verizon Wireless, AT&T Mobility |
| 301 | 2 | Verizon, Verizon Wireless, AT&T Mobility |
Green Valley phone number prefixes
Numbers starting with these first six digits were originally assigned to the New Market exchange.
240-822Onvoy (Sinch)240-915Telnyx240-984AT&T (Teleport)301-865Verizon301-882Core Communications
Nearby cities in area code 240
- Frederick
- Germantown
- Waldorf
- Silver Spring
- Gaithersburg
- Rockville
- Bethesda
- Bowie
- Aspen Hill
- Wheaton
- North Bethesda
- Potomac
Questions
- What is the area code for Green Valley, MD?
- Green Valley uses 2 area codes: 240 and 301. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
- What time zone is Green Valley in?
- Green Valley is in the Eastern time zone.