South Dakota
Area Codes List: 605
| Prefix | City | Company | Type | Introduced |
| 605216 | Aberdeen, SD | New Cingular Wireless PCS – IL | Cell Number | 10/31/2000 |
| 605225 | Aberdeen, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605226 | Aberdeen, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605228 | Aberdeen, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 02/04/1994 |
| 605229 | Aberdeen, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605252 | Aberdeen, SD | AT&T Local | Landline | 07/22/1999 |
| 605262 | Aberdeen, SD | Midcontinent Communications | Landline | 02/18/2003 |
| 605277 | Aberdeen, SD | Level 3 Communications | Landline | 02/10/2003 |
| 605290 | Aberdeen, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 02/04/1994 |
| 605377 | Aberdeen, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605380 | Aberdeen, SD | New Cingular Wireless PCS – IL | Cell Number | 02/04/1994 |
| 605622 | Aberdeen, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605626 | Aberdeen, SD | Qwest Corporation | Landline | 09/11/1994 |
| 605715 | Aberdeen, SD | Northern Valley Communications | Landline | 03/09/2007 |
| 605725 | Aberdeen, SD | Northern Valley Communications | Landline | 05/10/1999 |
| 605264 | Agar, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605253 | Alcester, SD | Knology Community Telephone | Landline | 02/04/1994 |
| 605547 | Alcester, SD | Heartland Telecom Company Of Iowa DBA Enventis | Landline | 01/10/1996 |
| 605934 | Alcester, SD | Alliance Communications Cooperative (baltic) | Landline | 02/04/1994 |
| 605239 | Alexandria, SD | Mccook Cooperative Telephone Company | Landline | 02/04/1994 |
| 605849 | Alpena, SD | Santel Communications Cooperative-sd | Landline | 02/04/1994 |
| 605298 | Andover, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605983 | Arlington, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605724 | Armour, SD | Armour Independent Tel Co DBA Golden West Telcomm | Landline | 02/04/1994 |
| 605946 | Armour, SD | Sioux Valley Tel DBA Golden West Telecommunication | Landline | 02/04/1994 |
| 605495 | Artesian, SD | Santel Communications Cooperative-sd | Landline | 02/04/1994 |
| 605527 | Artesian, SD | Santel Communications Cooperative-sd | Landline | 02/04/1994 |
| 605479 | Astoria, SD | Interstate Telecom. Coop. – Minnesota | Landline | 01/10/1996 |
| 605832 | Astoria, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605542 | Aurora, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605286 | Avon, SD | Vivian Tel Co DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605529 | Baltic, SD | Alliance Communications Cooperative (baltic) | Landline | 02/04/1994 |
| 605548 | Baltic, SD | Midcontinent Communications | Landline | 04/24/2009 |
| 605288 | Batesland, SD | Great Plains Communications | Landline | 01/10/1996 |
| 605210 | Belle Fourche, SD | New Cingular Wireless PCS – IL | Cell Number | 08/20/2000 |
| 605568 | Belle Fourche, SD | Midcontinent Communications | Landline | 10/06/2006 |
| 605569 | Belle Fourche, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 01/31/2008 |
| 605699 | Belle Fourche, SD | Bandwidth.com Clec | Landline | 03/16/2011 |
| 605723 | Belle Fourche, SD | Knology Of The Black Hills | Landline | 01/14/2000 |
| 605892 | Belle Fourche, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605344 | Belvidere, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605300 | Beresford, SD | New Cingular Wireless PCS – IL | Cell Number | 08/07/2003 |
| 605751 | Beresford, SD | Brookings Municipal Utilities | Cell Number | 03/03/2001 |
| 605763 | Beresford, SD | Beresford Municipal Telephone Co. | Landline | 02/04/1994 |
| 605957 | Beresford, SD | Knology Community Telephone | Landline | 02/04/1994 |
| 605541 | Big Stone City, SD | Midcontinent Communications | Landline | 07/09/2008 |
| 605862 | Big Stone City, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605244 | Bison, SD | West River Cooperative Telephone Company | Landline | 02/04/1994 |
| 605788 | Bison, SD | West River Cooperative Telephone Company | Landline | 02/04/1994 |
| 605786 | Black Hawk, SD | Qwest Corporation | Landline | 01/14/2000 |
| 605787 | Black Hawk, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605962 | Blunt, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605654 | Bonesteel, SD | Vivian Tel Co DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605385 | Box Elder, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605923 | Box Elder, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605784 | Bradley, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605582 | Brandon, SD | Alliance Comm. Cooperative (split Rock) | Landline | 02/04/1994 |
| 605839 | Brandon, SD | New Cingular Wireless PCS – IL | Cell Number | 04/08/2011 |
| 605876 | Brandt, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605449 | Bridgewater, SD | Tri-county Telcom | Landline | 02/04/1994 |
| 605729 | Bridgewater, SD | Armour Independent Tel Co DBA Golden West Telcomm | Landline | 02/04/1994 |
| 605825 | Bridgewater, SD | Tri-county Telcom | Landline | 02/04/1994 |
| 605325 | Bristol, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605492 | Bristol, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605448 | Britton, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605470 | Britton, SD | New Cingular Wireless PCS – IL | Cell Number | 07/06/2006 |
| 605551 | Britton, SD | New Cingular Wireless PCS – IL | Cell Number | 10/20/2010 |
| 605735 | Britton, SD | Dickey Rural Telephone Cooperative | Landline | 01/10/1996 |
| 605592 | Brookings, SD | New Cingular Wireless PCS – IL | Cell Number | 12/31/2009 |
| 605651 | Brookings, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 07/06/1997 |
| 605688 | Brookings, SD | City Of Brookings Municipal Telephone Dept. | Landline | 02/04/1994 |
| 605690 | Brookings, SD | New Cingular Wireless PCS – IL | Cell Number | 02/04/1994 |
| 605691 | Brookings, SD | Brookings Municipal Utilities | Cell Number | 08/14/1998 |
| 605692 | Brookings, SD | City Of Brookings Municipal Telephone Dept. | Landline | 02/04/1994 |
| 605693 | Brookings, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605695 | Brookings, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 02/04/1994 |
| 605696 | Brookings, SD | City Of Brookings Municipal Telephone Dept. | Landline | 02/04/1994 |
| 605697 | Brookings, SD | City Of Brookings Municipal Telephone Dept. | Landline | 02/04/1994 |
| 605833 | Buffalo Gap, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605375 | Buffalo, SD | West River Cooperative Telephone Company | Landline | 02/04/1994 |
| 605775 | Burke, SD | Vivian Tel Co DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605797 | Camp Crook, SD | West River Cooperative Telephone Company | Landline | 02/04/1994 |
| 605296 | Canistota, SD | Armour Independent Tel Co DBA Golden West Telcomm | Landline | 02/04/1994 |
| 605523 | Canova, SD | Mccook Cooperative Telephone Company | Landline | 02/04/1994 |
| 605558 | Canton, SD | Midcontinent Communications | Landline | 05/17/2001 |
| 605764 | Canton, SD | Knology Of The Plains | Landline | 11/20/1998 |
| 605836 | Canton, SD | Mcimetro Access Transmission Services LLC | Cell Number | 07/20/2006 |
| 605987 | Canton, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605414 | Castlewood, SD | Mcc Telephony Of The Mid-west | Landline | 08/04/2010 |
| 605793 | Castlewood, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605599 | Cavour, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605552 | Centerville, SD | Knology Of The Plains | Landline | 01/25/1998 |
| 605563 | Centerville, SD | Fort Randall Telco DBA Mt Rushmore Telephone Co | Landline | 02/04/1994 |
| 605234 | Chamberlain, SD | Midstate Telecom | Landline | 10/17/2001 |
| 605730 | Chamberlain, SD | New Cingular Wireless PCS – IL | Cell Number | 04/01/1997 |
| 605734 | Chamberlain, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605888 | Chamberlain, SD | Onvoy | Landline | 11/19/2012 |
| 605489 | Chester, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605533 | Claire City, SD | Red River Rural Tel Assn DBA Red River Comm – ND | Landline | 01/10/1996 |
| 605652 | Claire City, SD | Roberts County Telephone Cooperative Assn. | Landline | 02/04/1994 |
| 605294 | Claremont, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605233 | Clark, SD | New Cingular Wireless PCS – IL | Cell Number | 08/07/2003 |
| 605532 | Clark, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605844 | Clark, SD | New Cingular Wireless PCS – IL | Cell Number | 10/20/2010 |
| 605272 | Clear Lake, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605874 | Clear Lake, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605530 | Colman, SD | New Cingular Wireless PCS – IL | Cell Number | 02/04/1994 |
| 605534 | Colman, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605684 | Colman, SD | Knology Of The Plains | Landline | 10/31/2000 |
| 605446 | Colton, SD | Sioux Valley Tel DBA Golden West Telecommunication | Landline | 02/04/1994 |
| 605396 | Columbia, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605382 | Conde, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605324 | Cresbard, SD | Western Telephone Co. | Landline | 02/04/1994 |
| 605543 | Crooks, SD | Alliance Communications Cooperative (baltic) | Landline | 02/04/1994 |
| 605440 | Custer, SD | New Cingular Wireless PCS – IL | Cell Number | 09/14/2001 |
| 605517 | Custer, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 08/13/2003 |
| 605673 | Custer, SD | Vivian Tel Co DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605749 | Custer, SD | Rt Communications | Landline | 01/10/1996 |
| 605726 | Dante, SD | Midstate Communications | Landline | 02/04/1994 |
| 605854 | De Smet, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605860 | De Smet, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 02/11/1995 |
| 605861 | De Smet, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605340 | Deadwood, SD | AT&T Local | Landline | 02/07/2001 |
| 605571 | Deadwood, SD | Midcontinent Communications | Landline | 10/06/2006 |
| 605578 | Deadwood, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605631 | Deadwood, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 07/06/1997 |
| 605920 | Deadwood, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 04/01/1997 |
| 605428 | Dell Rapids, SD | Sioux Valley Tel DBA Golden West Telecommunication | Landline | 02/04/1994 |
| 605779 | Delmont, SD | Midstate Communications | Landline | 02/04/1994 |
| 605635 | Doland, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605200 | Dupree, SD | New Cingular Wireless PCS – IL | Cell Number | 01/21/2003 |
| 605365 | Dupree, SD | Cheyenne River Sioux Tribal Telephone Auth. | Landline | 02/04/1994 |
| 605538 | Dupree, SD | Cheyenne River Sioux Tribal Telephone Auth. | Landline | 02/04/1994 |
| 605821 | Dupree, SD | New Cingular Wireless PCS – IL | Cell Number | 11/11/2010 |
| 605964 | Eagle Butte, SD | Cheyenne River Sioux Tribal Telephone Auth. | Landline | 02/04/1994 |
| 605662 | Edgemont, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605205 | Elk Point, SD | New Cingular Wireless PCS – IL | Cell Number | 03/18/2003 |
| 605356 | Elk Point, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605565 | Elk Point, SD | Heartland Telecom Company Of Iowa DBA Enventis | Landline | 01/10/1996 |
| 605761 | Elk Point, SD | Knology Of The Plains | Landline | 11/20/1998 |
| 605952 | Elk Point, SD | Bandwidth.com Clec | Landline | 11/02/2011 |
| 605922 | Elkton, SD | Mcc Telephony Of The Mid-west | Landline | 08/04/2010 |
| 605985 | Enning, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605873 | Estelline, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605227 | Ethan, SD | Santel Communications Cooperative-sd | Landline | 02/04/1994 |
| 605284 | Eureka, SD | Valley Telecom Cooperative Association | Landline | 02/04/1994 |
| 605289 | Eureka, SD | Dickey Rural Telephone Cooperative | Landline | 01/10/1996 |
| 605577 | Eureka, SD | Valley Telecom Cooperative Association | Landline | 02/04/1994 |
| 605687 | Eureka, SD | Dickey Rural Telephone Cooperative | Landline | 01/10/1996 |
| 605587 | Fairfax, SD | Northeast Nebraska Telephone Co. | Landline | 01/10/1996 |
| 605739 | Faith, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605967 | Faith, SD | City Of Faith Municipal Telephone Co. | Landline | 02/04/1994 |
| 605598 | Faulkton, SD | Western Telephone Co. | Landline | 02/04/1994 |
| 605573 | Flandreau, SD | Knology Of The Plains | Landline | 08/20/2000 |
| 605633 | Flandreau, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 08/14/1998 |
| 605864 | Flandreau, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 01/25/1998 |
| 605997 | Flandreau, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605758 | Florence, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605477 | Fort Thompson, SD | Native American Telecom | Landline | 06/17/2009 |
| 605329 | Frederick, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605346 | Frederick, SD | Dickey Rural Telephone Cooperative | Landline | 01/10/1996 |
| 605358 | Frederick, SD | Dickey Rural Telephone Cooperative | Landline | 01/10/1996 |
| 605383 | Frederick, SD | Dickey Rural Telephone Cooperative | Landline | 01/10/1996 |
| 605925 | Freeman, SD | Vivian Tel Co DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605349 | Garretson, SD | Citizens Telecom Co Mn-frontier Citizens Com-mn | Landline | 01/10/1996 |
| 605594 | Garretson, SD | Alliance Comm. Cooperative (split Rock) | Landline | 02/04/1994 |
| 605765 | Gettysburg, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605768 | Gettysburg, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605769 | Gettysburg, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 07/04/1995 |
| 605771 | Gettysburg, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605762 | Glenham, SD | Valley Telecom Cooperative Association | Landline | 02/04/1994 |
| 605848 | Glenham, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 02/04/1994 |
| 605850 | Glenham, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605830 | Gregory, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 07/04/1995 |
| 605831 | Gregory, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605835 | Gregory, SD | Vivian Tel Co DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605395 | Groton, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605397 | Groton, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605213 | Harrisburg, SD | Midcontinent Communications | Landline | 11/07/2003 |
| 605214 | Harrisburg, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 03/18/2004 |
| 605408 | Harrisburg, SD | New Cingular Wireless PCS – IL | Cell Number | 05/27/2003 |
| 605498 | Harrisburg, SD | Knology Of The Plains | Landline | 04/01/1997 |
| 605743 | Harrisburg, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605767 | Harrisburg, SD | Knology Of The Plains | Landline | 01/25/1998 |
| 605875 | Harrold, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605526 | Hartford, SD | Union Tel. Co. DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605528 | Hartford, SD | Union Tel. Co. DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605567 | Hayes, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605792 | Hayti, SD | Mcc Telephony Of The Mid-west | Landline | 08/04/2010 |
| 605783 | Hazel, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605785 | Hazel, SD | Interstate Telecom. Coop. – South Dakota | Landline | 02/04/1994 |
| 605994 | Hecla, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605255 | Hermosa, SD | Fort Randall Telco DBA Mt Rushmore Telephone Co | Landline | 02/04/1994 |
| 605437 | Herreid, SD | Valley Telecom Cooperative Association | Landline | 02/04/1994 |
| 605478 | Highmore, SD | New Cingular Wireless PCS – IL | Cell Number | 04/22/2005 |
| 605574 | Hill City, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605266 | Hitchcock, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605852 | Holabird, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605870 | Holabird, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 09/11/1994 |
| 605871 | Holabird, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605281 | Hosmer, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 07/04/1995 |
| 605282 | Hosmer, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605283 | Hosmer, SD | Valley Telecom Cooperative Association | Landline | 02/04/1994 |
| 605285 | Hosmer, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605745 | Hot Springs, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605890 | Hot Springs, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 02/04/1994 |
| 605891 | Hot Springs, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605885 | Houghton, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605485 | Howard, SD | Mccook Cooperative Telephone Company | Landline | 02/04/1994 |
| 605579 | Howard, SD | New Cingular Wireless PCS – IL | Cell Number | 06/08/2005 |
| 605772 | Howard, SD | Alliance Comm. Cooperative (split Rock) | Landline | 02/04/1994 |
| 605984 | Hudson, SD | Alliance Communications Cooperative (baltic) | Landline | 02/04/1994 |
| 605363 | Humboldt, SD | Sioux Valley Tel DBA Golden West Telecommunication | Landline | 02/04/1994 |
| 605350 | Huron, SD | New Cingular Wireless PCS – IL | Cell Number | 02/04/1994 |
| 605352 | Huron, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605353 | Huron, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605354 | Huron, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 02/04/1994 |
| 605412 | Huron, SD | New Cingular Wireless PCS – IL | Cell Number | 03/11/2009 |
| 605461 | Huron, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 07/06/1997 |
| 605554 | Huron, SD | Midcontinent Communications | Landline | 10/10/2006 |
| 605936 | Huron, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 09/24/2012 |
| 605968 | Huron, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 06/20/2013 |
| 605426 | Ipswich, SD | Valley Telecom Cooperative Association | Landline | 02/04/1994 |
| 605439 | Ipswich, SD | Valley Telecom Cooperative Association | Landline | 02/04/1994 |
| 605263 | Irene, SD | Knology Community Telephone | Landline | 02/04/1994 |
| 605267 | Irene, SD | Knology Community Telephone | Landline | 02/04/1994 |
| 605546 | Iroquois, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605218 | Isabel, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 07/17/2013 |
| 605466 | Isabel, SD | Cheyenne River Sioux Tribal Telephone Auth. | Landline | 02/04/1994 |
| 605948 | Java, SD | Venture Communications Cooperative | Landline | 02/04/1994 |
| 605966 | Jefferson, SD | Jefferson Telephone Co. | Landline | 02/04/1994 |
| 605488 | Kadoka, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/09/2003 |
| 605837 | Kadoka, SD | Kadoka Tel Co DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605869 | Kennebec, SD | Kennebec Telephone Co. | Landline | 02/04/1994 |
| 605666 | Keystone, SD | Fort Randall Telco DBA Mt Rushmore Telephone Co | Landline | 02/04/1994 |
| 605680 | Kimball, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 02/11/1995 |
| 605682 | Kimball, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605778 | Kimball, SD | Midstate Communications | Landline | 02/04/1994 |
| 605455 | Kyle, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605469 | Lake Andes, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605481 | Lake Andes, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 02/11/1995 |
| 605487 | Lake Andes, SD | Fort Randall Telco DBA Mt Rushmore Telephone Co | Landline | 02/04/1994 |
| 605491 | Lake Andes, SD | New Cingular Wireless PCS – IL | Cell Number | 10/15/1996 |
| 605710 | Lake Norden, SD | Mcc Telephony Of The Mid-west | Landline | 08/04/2010 |
| 605203 | Lake Preston, SD | New Cingular Wireless PCS – IL | Cell Number | 09/23/2002 |
| 605620 | Lake Preston, SD | Zayo Group LLC | Landline | 02/06/2007 |
| 605632 | Lake Preston, SD | Mcc Telephony Of The Mid-west | Landline | 06/23/2010 |
| 605847 | Lake Preston, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605566 | Lead, SD | Onvoy | Landline | 05/01/2009 |
| 605580 | Lead, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 02/04/1994 |
| 605584 | Lead, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605591 | Lead, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605641 | Lead, SD | New Cingular Wireless PCS – IL | Cell Number | 09/11/1994 |
| 605374 | Lemmon, SD | West River Cooperative Telephone Company | Landline | 02/04/1994 |
| 605372 | Lennox, SD | Knology Community Telephone | Landline | 02/04/1994 |
| 605647 | Lennox, SD | Knology Community Telephone | Landline | 02/04/1994 |
| 605744 | Lennox, SD | New Cingular Wireless PCS – IL | Cell Number | 03/15/2011 |
| 605750 | Lennox, SD | New Cingular Wireless PCS – IL | Cell Number | 09/30/2003 |
| 605364 | Lesterville, SD | Vivian Tel Co DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605248 | Letcher, SD | Santel Communications Cooperative-sd | Landline | 02/04/1994 |
| 605564 | Lodgepole, SD | Consolidated Telcom | Landline | 01/10/1996 |
| 605379 | Long Lake, SD | Dickey Rural Telephone Cooperative | Landline | 01/10/1996 |
| 605462 | Long Valley, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605245 | Lower Brule, SD | Midstate Communications | Landline | 02/04/1994 |
| 605278 | Ludlow, SD | Consolidated Telcom | Landline | 01/10/1996 |
| 605576 | Ludlow, SD | Consolidated Telcom | Landline | 01/10/1996 |
| 605256 | Madison, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605270 | Madison, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 09/11/1994 |
| 605291 | Madison, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 10/11/1997 |
| 605427 | Madison, SD | Knology Of The Plains | Landline | 08/20/2000 |
| 605480 | Madison, SD | New Cingular Wireless PCS – IL | Cell Number | 02/04/1994 |
| 605556 | Madison, SD | Midcontinent Communications | Landline | 05/17/2001 |
| 605636 | Madison, SD | Qwest Corporation | Landline | 01/14/2000 |
| 605648 | Marion, SD | Vivian Tel Co DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605407 | Martin, SD | New Cingular Wireless PCS – IL | Cell Number | 03/02/2009 |
| 605441 | Martin, SD | New Cingular Wireless PCS – IL | Cell Number | 09/14/2001 |
| 605454 | Martin, SD | New Cingular Wireless PCS – IL | Cell Number | 12/03/2004 |
| 605685 | Martin, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605899 | Martin, SD | New Cingular Wireless PCS – IL | Cell Number | 10/25/2010 |
| 605944 | Martin, SD | New Cingular Wireless PCS – IL | Cell Number | 11/12/2009 |
| 605273 | Mc Intosh, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605314 | Mc Laughlin, SD | Standing Rock Telecommunications | Cell Number | 03/12/2009 |
| 605823 | Mc Laughlin, SD | West River Telecommunications Cooperative | Landline | 02/04/1994 |
| 605887 | Mellette, SD | James Valley Cooperative Telephone Company | Landline | 02/04/1994 |
| 605387 | Menno, SD | Vivian Tel Co DBA Golden West Telecommunications | Landline | 02/04/1994 |
| 605843 | Midland, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605432 | Milbank, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605434 | Milbank, SD | Rc Communications | Landline | 06/15/2005 |
| 605438 | Milbank, SD | Sstelecom | Landline | 05/12/2006 |
| 605445 | Milbank, SD | Midcontinent Communications | Landline | 07/21/2005 |
| 605467 | Milbank, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 08/11/2004 |
| 605924 | Milbank, SD | Cellco Partnership DBA Verizon Wireless | Cell Number | 08/19/2008 |
| 605949 | Milbank, SD | New Cingular Wireless PCS – IL | Cell Number | 01/25/1998 |
| 605544 | Milesville, SD | Golden West Tel Coop Inc DBA Golden West Telecomm | Landline | 02/04/1994 |
| 605204 | Miller, SD | New Cingular Wireless PCS – IL | Cell Number | 09/23/2002 |
| 605853 | Miller, SD | Qwest Corporation | Landline | 02/04/1994 |
| 605893 | Miller, SD | Midcontinent Communications | Landline | 12/13/2006 |
| 605309 | Mission, SD | Bandwidth.com Clec | Landline | 01/14/2014 |
| 605319 | Mission, SD | New Cingular Wireless PCS – IL | Cell Number | 06/12/2009 |
| 605828 | Mission, SD | New Cingular Wireless PCS – IL | Cell Number | 04/13/2005 |
