| Aberdeen | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Aberdeen | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Adrian, MN | 99 / 503 | X | X | | Vast Broadband |
| Agar | 10 / 410 | 152 | 151 | | Venture Coop |
| Akron, IA | 2/ 200 | X | X | | Premier Communications |
| Alcester | 8 / 503 | X | X | | Vast Broadband |
| Alexandria | 2 | X | X | | Trio Tel |
| Alpena | 8 | 146 | 148 | | Santel Communications Coop |
| Andover | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Anthon, IA | 15 / 106 | X | X | | Long Lines |
| Armour | 8/706 | 707 | 708 | | Fort Randall Telephone |
| Armour | 7 / 608 | 109 | 110 | | Golden West Communications |
| Artesian | 8 | 146 | 148 | | Santel Communications Coop |
| Ashton | 2/ 200 | X | X | | Premier Communications |
| Astoria | 8 / 408 | 74 | 75 | | ITC |
| Atkinson, NE | 8/706 | 707 | 708 | | Fort Randall Telephone |
| Aurora | 8 / 408 | 74 | 75 | | ITC |
| Avon | 7 / 608 | 109 | 110 | | Golden West Communications |
| Baltic | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Bath | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Belle Fourche | 5 / 501 | 146 | 147 | | Vast Broadband |
| Belle Fourche | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Beresford | 7 / 2.1 | 2.2 | 2.3 | | Beresford Cablevision |
| Big Stone City | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Bison | 13 | X | X | | West River CATV |
| Black Hawk | 5 / 501 | 146 | 147 | | Vast Broadband |
| Black Hawk | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Blunt | 10 / 410 | 152 | 151 | | Venture Coop |
| Bonesteel | 8 / 608 | 109 | 110 | | Golden West Communications |
| Boulder Canyon | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Bowdle | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Box Elder | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Boyden, IA | 2/ 200 | X | X | | Premier Communications |
| Bradley | 8 / 408 | 74 | 75 | | ITC |
| Brandon | 7 / 307 | 179 | 178 | | Alliance Communications |
| Brandt | 8 / 408 | 74 | 75 | | ITC |
| Bridgewater | 2 | 109 | 110 | | Golden West Communications |
| Bristol | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Britton | 10 / 410 | 152 | 151 | | Venture Coop |
| Brookings | 7 / 808 | X | X | | Mediacom |
| Brookings | 8 / 708 | 28 | 27 | | Swiftel |
| Bryant | 8 / 408 | 74 | 75 | | ITC |
| Buffalo | 13 | X | X | | West River CATV |
| Buffalo Gap | 9 / 609 | 109 | 110 | | Golden West Communications |
| Burke | 8 / 608 | 109 | 110 | | Golden West Communications |
| Campbell, MN | 19 | 20 | 21 | | RC Technologies |
| Canistota | 2 | 109 | 110 | | Golden West Communications |
| Canova | 2 | X | X | | Trio Tel |
| Canton | 8 / 503 | X | X | | Vast Broadband |
| Canton | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Carthage | 7 / 307 | 179 | 178 | | Alliance Communications |
| Castlewood | 8 / 408 | 74 | 75 | | ITC |
| Centerville | 8 / 503 | X | X | | Vast Broadband |
| Central City | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Chamberlain | 12/108 | 110 | 111 | | Midstate Communication |
| Chancellor | 8 / 503 | X | X | | Vast Broadband |
| Chester | 8 / 408 | 74 | 75 | | ITC |
| Claremont | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Clark | 8 / 408 | 74 | 75 | | ITC |
| Clear Lake | 8 / 408 | 180 | 182 | | ITC |
| Colman | 8 / 503 | X | X | | Vast Broadband |
| Colome | 8 / 608 | 109 | 110 | | Golden West Communications |
| Colton | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Columbia | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Conde | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Corona | 19 | 20 | 21 | | RC Technologies |
| Correctionville, IA | 15 / 106 | X | X | | Long Lines |
| Corsica | 7 / 608 | 109 | 110 | | Golden West Communications |
| Country Village | 5 / 602 | X | X | 599 | Midcontinent Communications |
| Cresbard | 8 / 410 | X | X | | Venture Coop |
| Crooks | 7 / 307 | 179 | 178 | | Alliance Communications |
| Crooks | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Custer | 9 / 609 | 109 | 110 | | Golden West Communications |
| Dakota Dunes | 15 / 106 | X | X | | Long Lines |
| Danbury, IA | 15 / 106 | X | X | | Long Lines |
| Deadwood | 5 / 501 | 146 | 147 | | Vast Broadband |
| Deadwood | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Dell Rapids | 7 / 608 | 109 | 110 | | Golden West Communications |
| Delmont | 12/108 | 110 | 111 | | Midstate Communication |
| Doland | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Doon, IA | 2/ 200 | X | X | | Premier Communications |
| Dupree | 13 | X | X | | Cheyenne River Cable |
| Eagle Butte | 13 | X | X | | Cheyenne River Cable |
| Edgemont | 9 / 609 | 109 | 110 | | Golden West Communications |
| Edgerton, MN | 8 / 503 | X | X | | Vast Broadband |
| Elk Point | 8 / 503 | X | X | | Vast Broadband |
| Elkton | 8 / 408 | 74 | 75 | | ITC |
| Ellsworth AFB | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Ellsworth, MN | 8 / 503 | X | X | | Vast Broadband |
| Emery | 2 | X | X | | Trio Tel |
| Estelline | 8 / 408 | 74 | 75 | | ITC |
| Ethan | 8 | 146 | 148 | | Santel Communications Coop |
| Eureka | 7 | 104 | 105 | | Golden West - Valley Telecom Coop Assn |
| Evergreen | 8 / 608 | 109 | 110 | | Golden West Communications |
| Fairfax | 8 / 608 | 109 | 110 | | Golden West Communications |
| Faith | 11 | X | X | | West River CATV |
| Faulkton | 8 / 410 | X | X | | Venture Coop |
| Ferney | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Flandreau | 8 / 503 | X | X | | Vast Broadband |
| Florence | 8 / 408 | 74 | 75 | | ITC |
| Frederick | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Freeman | 2 | 109 | 110 | | Golden West Communications |
| Freeman | 7 / 808 | X | X | | Mediacom |
| Ft. Pierre | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Garretson | 7 / 307 | 179 | 178 | | Alliance Communications |
| Gary | 8 / 408 | 74 | 75 | | ITC |
| Gayville | 8 / 503 | X | X | | Vast Broadband |
| Gayville | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Geddes | 12/108 | 110 | 111 | | Midstate Communication |
| George, IA | 2/ 200 | X | X | | Premier Communications |
| Gettysburg | 10 / 410 | 152 | 151 | | Venture Coop |
| Glenham | 7 | 104 | 105 | | Golden West - Valley Telecom Coop Assn |
| Goodwin | 8 / 408 | 74 | 75 | | ITC |
| Grant County | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Granville, IA | 2/ 200 | X | X | | Premier Communications |
| Gregory | 8 / 608 | 109 | 110 | | Golden West Communications |
| Groton | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Harrisburg | 8 / 503 | X | X | | Vast Broadband |
| Harrisburg | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Harrold | 10 / 410 | 152 | 151 | | Venture Coop |
| Hart Ranch | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Hartford | 7 / 608 | 109 | 110 | | Golden West Communications |
| Hayti | 8 / 408 | 74 | 75 | | ITC |
| Hazel | 19 | 20 | 21 | | RC Technologies |
| Hecla | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Hendricks, MN | 8 / 408 | 74 | 75 | | ITC |
| Henry | 8 / 408 | 74 | 75 | | ITC |
| Herreid | 7 | 104 | 105 | | Golden West - Valley Telecom Coop Assn |
| Herreid | 7 | 104 | 105 | | Valley Video |
| Highmore | 10 / 410 | 152 | 151 | | Venture Coop |
| Hill City | 9 / 609 | 109 | 110 | | Golden West Communications |
| Hills, MN | 7 / 307 | 179 | 178 | | Alliance Communications |
| Hinton, IA | 2/ 200 | X | X | | Premier Communications |
| Hitchcock | 10 / 410 | 152 | 151 | | Venture Coop |
| Holland, MN | 32 | X | X | | K-Communications (Woodstock Telephone) |
| Holstein, IA | 15 / 106 | X | X | | Long Lines |
| Hosmer | 7 | 104 | 105 | | Golden West - Valley Telecom Coop Assn |
| Hospers | 2/ 200 | X | X | | Premier Communications |
| Hot Springs | 9 / 609 | 109 | 110 | | Golden West Communications |
| Houghton | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Hoven | 10 / 410 | 152 | 151 | | Venture Coop |
| Howard | 7 / 307 | 179 | 178 | | Alliance Communications |
| Hudson | 7 / 307 | 179 | 178 | | Alliance Communications |
| Hull, IA | 2/ 200 | X | X | | Premier Communications |
| Humboldt | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Hurley | 8 / 503 | X | X | | Vast Broadband |
| Huron | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Ida Grove, IA | 15 / 106 | X | X | | Long Lines |
| Inwood, IA | 7 / 307 | 179 | 178 | | Alliance Communications |
| Ipswich | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Irene | 8 / 503 | X | X | | Vast Broadband |
| Ireton, IA | 2/ 200 | X | X | | Premier Communications |
| Iroquois | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Jasper, MN | 8 / 503 | X | X | | Vast Broadband |
| Java | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Jefferson | 15 / 106 | X | X | | Long Lines |
| Kadoka | 9 / 609 | 109 | 110 | | Golden West Communications |
| Kennebec | 8 | 62 | 64 | | Kennebec Telephone Co. |
| Kimball | 12/108 | 110 | 111 | | Midstate Communication |
| Kyle | 8 / 608 | 109 | 110 | | Golden West Communications |
| Labolt | 8 / 408 | 74 | 75 | | ITC - SSTelecom |
| Lake Andes | 8/706 | 707 | 708 | | Fort Randall Telephone |
| Lake Benton, MN | 8 / 408 | 74 | 75 | | ITC |
| Lake Norden | 8 / 408 | 74 | 75 | | ITC |
| Lake Wilson, MN | 8 / 503 | X | X | | Vast Broadband |
| Langford | 10 / 410 | 152 | 151 | | Venture Coop |
| Larchwood, IA | 7 / 307 | 179 | 178 | | Alliance Communications |
| Lead | 5 / 501 | 146 | 147 | | Vast Broadband |
| Lead | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Lemmon | 13 | X | X | | West River CATV |
| Lennox | 8 / 503 | X | X | | Vast Broadband |
| Leola | 7 | 104 | 105 | | Golden West - Valley Telecom Coop Assn |
| Letcher | 8 | 146 | 148 | | Santel Communications Coop |
| Logan, IA | 15 / 106 | X | X | | Long Lines |
| Lower Brule | 8 / 608 | 109 | 110 | | Golden West Communications |
| Luverne, MN | 8 / 503 | X | X | | Vast Broadband |
| Lyons | 7 / 307 | 179 | 178 | | Alliance Communications |
| Madison | 8 / 503 | X | X | | Vast Broadband |
| Madison | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Magnolia, IA | 15 / 106 | X | X | | Long Lines |
| Manderson | 8 / 608 | 109 | 110 | | Golden West Communications |
| Mapleton, IA | 15 / 106 | X | X | | Long Lines |
| Marion | 2 | 109 | 110 | | Golden West Communications |
| Martin | 8 / 608 | 109 | 110 | | Golden West Communications |
| Maurice, IA | 2/ 200 | X | X | | Premier Communications |
| McIntosh | 13 | X | X | | West River CATV |
| McLaughlin | 11 | X | X | | West River CATV |
| Meade County | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Meckling | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Mellette | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Menno | 2 | 109 | 110 | | Golden West Communications |
| Merrill, IA | 2/ 200 | X | X | | Premier Communications |
| Midland | 9 / 609 | 109 | 110 | | Golden West Communications |
| Milbank | 8 / 408 | 74 | 75 | | ITC - SSTelecom |
| Milbank | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Miller | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Minda | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Mission | 8 / 608 | 109 | 110 | | Golden West Communications |
| Missouri Valley, IA | 15 / 106 | X | X | | Long Lines |
| Mitchell | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Mitchell | 13 | 185 | 186 | | Santel - Mitchell Telecom |
| Mobridge | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Montrose | 7 / 608 | 109 | 110 | | Golden West Communications |
| Mound City | 7 | 104 | 105 | | Golden West - Valley Telecom Coop Assn |
| Mt. Vernon | 8 | 146 | 148 | | Santel Communications Coop |
| Murdo | 8 / 608 | 109 | 110 | | Golden West Communications |
| N. Sioux City | 8 / 503 | X | X | | Vast Broadband |
| New Effington | 19 | 20 | 21 | | RC Technologies |
| New Underwood | 9 / 609 | 109 | 110 | | Golden West Communications |
| Newell | 13 | X | X | | West River CATV |
| Nunda | 8 / 408 | 74 | 75 | | ITC |
| Oacoma | 12/108 | 110 | 111 | | Midstate Communication |
| Oakes | 3 | X | X | | CSI |
| Ocheyedan | 2/ 200 | X | X | | Premier Communications |
| Oelrichs | 9 / 609 | 109 | 110 | | Golden West Communications |
| Oldham | 7 / 307 | 179 | 178 | | Alliance Communications |
| Onaka | 10 / 410 | 152 | 151 | | Venture Coop |
| Onawa, IA | 15 / 106 | X | X | | Long Lines |
| Onida | 10 / 410 | 152 | 151 | | Venture Coop |
| Orange City, IA | 15 / 106 | X | X | | Long Lines |
| Parker | 8 / 503 | X | X | | Vast Broadband |
| Parkson | 8 | 146 | 148 | | Santel Communications Coop |
| Parkston | 2 | 109 | 110 | | Golden West Communications |
| Pennington County | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Philip | 9 / 609 | 109 | 110 | | Golden West Communications |
| Pickstown | 8/706 | 707 | 708 | | Fort Randall Telephone |
| Piedmont | 5 / 501 | 146 | 147 | | Vast Broadband |
| Piedmont | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Pierpont | 10 / 410 | 152 | 151 | | Venture Coop |
| Pierre | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Pine Ridge | 8 / 608 | 109 | 110 | | Golden West Communications |
| Pipestone, MN | 8 / 503 | X | X | | Vast Broadband |
| Plankinton | 7 / 608 | 109 | 110 | | Golden West Communications |
| Platte | 12/108 | 110 | 111 | | Midstate Communication |
| Pollock | 7 | 104 | 105 | | Golden West - Valley Telecom Coop Assn |
| Prairiewood | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Presho | 8 | 62 | 64 | | Kennebec Telephone Co. |
| Pukwana | 12/108 | 110 | 111 | | Midstate Communication |
| Ramona | 7 / 307 | 179 | 178 | | Alliance Communications |
| Rapid City | 5 / 501 | 146 | 147 | | Vast Broadband |
| Rapid City | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Raymond | 8 / 408 | 74 | 75 | | ITC |
| Redfield | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Redfield | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Ree Heights | 10 / 410 | 152 | 151 | | Venture Coop |
| Reliance | 8 / 608 | 109 | 110 | | Golden West Communications |
| Renner | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Renner (rural) | 7 / 307 | 179 | 178 | | Alliance Communications |
| Revillo | 8 / 408 | 74 | 75 | | ITC - SSTelecom |
| Rimrock | 8 | X | X | 599 | Midcontinent Communications |
| Rock Rapids, IA | 2/ 200 | X | X | | Premier Communications |
| Rock Valley, IA | 2/ 200 | X | X | | Premier Communications |
| Roscoe | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Rosebud | 8 / 608 | 109 | 110 | | Golden West Communications |
| Rosholt | 10 / 410 | 152 | 191 | | Venture Coop |
| Roslyn | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Ruthton, MN | 32 | X | X | | K-Communications (Woodstock Telephone) |
| Scotland | 2 | 109 | 110 | | Golden West Communications |
| Selby | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Seneca | 10 / 410 | 152 | 151 | | Venture Coop |
| Sergeant Bluff, IA | 15 / 106 | X | X | | Long Lines |
| Sheldon, IA | 2/ 200 | X | X | | Premier Communications |
| Sherman | 7 / 307 | 179 | 178 | | Alliance Communications |
| Shindler | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Sibley, IA | 2/ 200 | X | X | | Premier Communications |
| Sinai | 8 / 408 | 74 | 75 | | ITC |
| Sioux Center, IA | 2/ 200 | X | X | | Premier Communications |
| Sioux Falls | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Sisseton | 19 | 20 | 21 | | RC Technologies |
| Sisseton | 10 / 410 | 152 | 191 | | Venture Coop |
| So. Sioux City, NE | 15 / 106 | X | X | | Long Lines |
| Sommerset | 5 / 501 | 146 | 147 | | Vast Broadband |
| South Shore | 8 / 408 | 74 | 75 | | ITC - SSTelecom |
| Spearfish | 5 / 501 | 146 | 147 | | Vast Broadband |
| Spearfish | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Spencer | 2 | X | X | | Trio Tel |
| Springfield | 7 / 608 | 109 | 110 | | Golden West Communications |
| St. Francis | 8 / 608 | 109 | 110 | | Golden West Communications |
| St. Lawrence | 8 / 604 | 597 | 598 | | Midcontinent Communications |
| St. Onge | 5 / 501 | 146 | 147 | | Vast Broadband |
| Stickney | 12/108 | 110 | 111 | | Midstate Communication |
| Stockholm | 8 / 408 | 74 | 75 | | ITC - SSTelecom |
| Stratford | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Sturgis | 5 / 501Â | 146 | 147 | | Vast Broadband |
| Sturgis | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Summerset | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Summit | 19 | 20 | 21 | | RC Technologies |
| Tabor | 8/706 | 707 | 708 | | Fort Randall Telephone |
| Tea | 8 / 503 | X | X | | Vast Broadband |
| Tea | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Timber Lake | 13 | X | X | | West River CATV |
| Tolstoy | 10 / 410 | 152 | 151 | | Venture Coop |
| Toronto | 8 / 408 | 74 | 75 | | ITC |
| Trent | 7 / 608 | 109 | 110 | | Golden West Communications |
| Tripp | 8/706 | 707 | 708 | | Fort Randall Telephone |
| Tripp | 8 | 146 | 148 | | Santel Communications Coop |
| Tulare | 10 / 410 | 152 | 151 | | Venture Coop |
| Turton | 3 / 601 | 66 | 67 | | James Valley Cooperative |
| Tyndall | 8/706 | 707 | 708 | | Fort Randall Telephone |
| Valley Springs | 7 / 307 | 179 | 178 | | Alliance Communications |
| Veblen | 19 | 20 | 21 | | RC Technologies |
| Vermillion | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Viborg | 8 / 503 | X | X | | Vast Broadband |
| Wagner | 8/706 | 707 | 708 | | Fort Randall Telephone |
| Wakonda | 8 / 503 | X | X | | Vast Broadband |
| Wall | 9 / 609 | 109 | 110 | | Golden West Communications |
| Wanblee | 8 / 608 | 109 | 110 | | Golden West Communications |
| Warner | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Watertown | 8 / 503 | X | X | | Vast Broadband |
| Watertown | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Waubay | 8 / 408 | 74 | 75 | | ITC |
| Waubay | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Webster | 8 / 408 | 74 | 75 | | ITC |
| Webster | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Wentworth | 8 / 408 | 74 | 75 | | ITC |
| Wessington | 10 / 410 | 152 | 151 | | Venture Coop |
| Wessington Springs | 10 / 410 | 152 | 151 | | Venture Coop |
| White | 8 / 408 | 74 | 75 | | ITC |
| White Lake | 12/108 | 110 | 111 | | Midstate Communication |
| White River | 8 / 608 | 109 | 110 | | Golden West Communications |
| Whitewood | 5 / 501 | 146 | 147 | | Vast Broadband |
| Whitewood | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Whiting, IA | 15 / 106 | X | X | | Long Lines |
| Willow Lake | 8 / 408 | 74 | 75 | | ITC |
| Wilmont | 19 | 20 | 21 | | RC Technologies |
| Winner | 8 / 608 | 109 | 110 | | Golden West Communications |
| Wolsey | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
| Woodbine, IA | 15 / 106 | X | X | | Long Lines |
| Woodstock, MN | 32 | X | X | | K-Communications (Woodstock Telephone) |
| Woolsey | 8 | 146 | 148 | | Santel Communications Coop |
| Woonsocket | 8 | 146 | 148 | | Santel Communications Coop |
| Worthing | 8 / 503 | X | X | | Vast Broadband |
| Worthington, MN | 8 / 503 | X | X | | Vast Broadband |
| Yankton | 8 / 503 | X | X | | Vast Broadband |
| Yankton | 8 / 604 | 597 | 598 | 599 | Midcontinent Communications |
