Phone numbers in St. Clairsville, Ohio
St. Clairsville has 17 phone prefixes in area code 740.
Biggest holders: Verizon Wireless, AT&T (local phone), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 53%
- Local phone company 24%
- Internet / business phone carrier 24%
Every prefix in St. Clairsville
Search the first six digits of a number in this list. If it's here, the number started in St. Clairsville with the carrier shown. If it isn't, check the Ohio page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 740-232 | AT&T (local phone) | Local phone company | – |
| 740-296 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 740-298 | Verizon Wireless | Mobile carrier | – |
| 740-310 | Verizon Wireless | Mobile carrier | – |
| 740-312 | Verizon Wireless | Mobile carrier | – |
| 740-338 | Teleport Communications America | Internet / business phone carrier | – |
| 740-359 | AT&T Mobility | Mobile carrier | – |
| 740-391 | Verizon Wireless | Mobile carrier | – |
| 740-449 | Comcast | Internet / business phone carrier | – |
| 740-526 | AT&T (local phone) | Local phone company | – |
| 740-576 | Verizon Wireless | Mobile carrier | – |
| 740-579 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 740-650 | Peerless Network Of Ohio | Internet / business phone carrier | – |
| 740-695 | AT&T (local phone) | Local phone company | – |
| 740-699 | AT&T (local phone) | Local phone company | – |
| 740-827 | Verizon Wireless | Mobile carrier | 2007 |
| 740-839 | AT&T Mobility | Mobile carrier | 2010 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.