304
Area code
WV
United States geographic area code, in service since 1947-01-01. Part of the 304/681 overlay complex — ten-digit dialing required.
Statusin service
Introduced1947-01-01
JurisdictionWV, US
Local dialing10D
Time zoneEastern
Last verified2026-09-17
Utilization 101% of assignable prefixes assigned
As of 09/17/2026
0%800 of ~792 assignable NXX values (200–999 excl. N11)100%
Prefix-level assignment does not equal number-level exhaustion; thousands-block pooling extends capacity. First assignment on record 2001-01-10, most recent 2026-01-08.
Area codes serve rate-center geographies, not municipal boundaries. “WV” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | FRONTIER WEST VIRGINIA INC. | 256 | 32% |
| 02 | CITIZENS TEL CO OF WV DBA FRONTIER OF WV | 86 | 10.8% |
| 03 | NEW CINGULAR WIRELESS PCS, LLC - DC | 54 | 6.8% |
| 04 | GATEWAY TELECOM LLC DBA STRATUSWAVE COMM LLC WV | 47 | 5.9% |
| 05 | FIBERNET, LLC - WV | 43 | 5.4% |
| 06 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV | 42 | 5.3% |
| 07 | UNITED STATES CELLULAR - WV | 35 | 4.4% |
| 08 | LEVEL 3 COMMUNICATIONS, LLC - WV | 33 | 4.1% |
| 09 | T-MOBILE USA, INC. | 28 | 3.5% |
| 10 | NEW CINGULAR WIRELESS PCS, LLC - IL | 18 | 2.3% |
Important: these are initial assignees from NANPA CO-code records — the carrier a prefix was originally assigned to. Because of number portability, the current serving carrier of any individual number may differ.
Change history
Recorded events for this NPA- 2008-03-21 NPA 681 to Overlay NPA 304 (West Virginia)
- 1947-01-01Area code 304 entered service.
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2008-03-21 | PL-375 ↗ | NPA 681 to Overlay NPA 304 (West Virginia) |