South Dakota, United States
Central Time
6:15 AM
Area Code
605
State / Province
South Dakota
Country
United States
Time Zone
Central Time
Area code 605 covers 270 cities and communities across South Dakota, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+16055550100">+16055550100</a><a href="tel:+16055550199">+16055550199</a>Look up which exchange in South Dakota a specific 605 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
745 active prefixes in this area code, assigned as 3,617 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.
Showing blocks 1–100 of 3,617
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 605-200 | 0 | Dupree | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-200 | 1 | Dupree | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-200 | 2 | Dupree | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-200 | 3 | Dupree | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-200 | 4 | Dupree | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | SXFLSDPS5MD | 640 | — | — |
| 605-200 | 5 | Dupree | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | — | 640 | — | — |
| 605-200 | 9 | Dupree | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-200 | A | Dupree | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-201 | A | Sioux Falls | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-202 | 0 | Vermillion | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-202 | 1 | Vermillion | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-202 | 2 | Vermillion | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-202 | 3 | Vermillion | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-202 | 4 | Vermillion | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-202 | 5 | Vermillion | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-202 | 6 | Vermillion | Landline or VoIP | AIRUS, INC. - SD (580H) | SIOUX FALLS | 640 | — | — |
| 605-202 | 7 | Vermillion | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-202 | 8 | Vermillion | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-202 | 9 | Vermillion | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-202 | A | Vermillion | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-203 | 0 | Lake Preston | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-203 | 1 | Lake Preston | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-203 | 2 | Lake Preston | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | — | 640 | — | — |
| 605-203 | 3 | Lake Preston | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-203 | 4 | Lake Preston | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-203 | 5 | Lake Preston | Wireless | ONVOY SPECTRUM, LLC (624H) | SXFLSDCOX0X | 640 | — | — |
| 605-203 | 7 | Lake Preston | Landline or VoIP | AHOI LLC (883K) | — | 640 | — | — |
| 605-203 | A | Lake Preston | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-204 | 0 | Miller | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-204 | 1 | Miller | Landline or VoIP | TELNYX LLC (073H) | SXFLSDPS0MD | 640 | — | — |
| 605-204 | 2 | Miller | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-204 | 3 | Miller | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-204 | 4 | Miller | Landline or VoIP | TELNYX LLC (073H) | SXFLSDPS0MD | 640 | — | — |
| 605-204 | 5 | Miller | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-204 | 6 | Miller | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-204 | 7 | Miller | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-204 | 8 | Miller | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-204 | 9 | Miller | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-204 | A | Miller | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-205 | 0 | Elk Point | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-205 | 1 | Elk Point | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-205 | 2 | Elk Point | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-205 | 3 | Elk Point | Landline or VoIP | AIRUS, INC. - SD (580H) | SIOUX FALLS | 640 | — | — |
| 605-205 | 4 | Elk Point | Landline or VoIP | TELNYX LLC (073H) | SXFLSDPS0MD | 640 | — | — |
| 605-205 | 5 | Elk Point | Landline or VoIP | AIRUS, INC. - SD (580H) | SIOUX FALLS | 640 | — | — |
| 605-205 | 6 | Elk Point | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | SXFLSDCOQMD | 640 | — | — |
| 605-205 | 7 | Elk Point | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-205 | 8 | Elk Point | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-205 | 9 | Elk Point | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-205 | A | Elk Point | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-206 | 0 | Sturgis | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | RPCYSDCOGMD | 640 | — | — |
| 605-206 | 1 | Sturgis | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | RPCYSDCOGMD | 640 | — | — |
| 605-206 | 2 | Sturgis | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - SD (5180) | SXFLSDCORMD | 640 | — | — |
| 605-206 | 3 | Sturgis | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-206 | 4 | Sturgis | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-206 | 5 | Sturgis | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-206 | 6 | Sturgis | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-206 | 7 | Sturgis | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-206 | 8 | Sturgis | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - SD (5180) | SXFLSDCORMD | 640 | — | — |
| 605-206 | 9 | Sturgis | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-206 | A | Sturgis | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | RPCYSDCOGMD | 640 | — | — |
| 605-207 | 0 | Platte | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-207 | A | Platte | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-208 | 0 | Winner | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-208 | 1 | Winner | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-208 | 2 | Winner | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-208 | 3 | Winner | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | — | 640 | — | — |
| 605-208 | 4 | Winner | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-208 | 5 | Winner | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-208 | 6 | Winner | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-208 | 7 | Winner | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | SXFLSDPS5MD | 640 | — | — |
| 605-208 | A | Winner | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-209 | A | Rapid City | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | RPCYSDCOGMD | 640 | — | — |
| 605-210 | 0 | Belle Fourche | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | RPCYSDCOGMD | 640 | — | — |
| 605-210 | 1 | Belle Fourche | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | RPCYSDCOGMD | 640 | — | — |
| 605-210 | 2 | Belle Fourche | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | RPCYSDCOGMD | 640 | — | — |
| 605-210 | 3 | Belle Fourche | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | RPCYSDCOGMD | 640 | — | — |
| 605-210 | 4 | Belle Fourche | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | RPCYSDCOGMD | 640 | — | — |
| 605-210 | 5 | Belle Fourche | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-210 | 6 | Belle Fourche | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-210 | 7 | Belle Fourche | Landline or VoIP | ONVOY, LLC - SD (162G) | SXFLSDCOTMD | 640 | — | — |
| 605-210 | 8 | Belle Fourche | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | — | 640 | — | — |
| 605-210 | 9 | Belle Fourche | Landline or VoIP | TELNYX LLC (073H) | SXFLSDPS0MD | 640 | — | — |
| 605-210 | A | Belle Fourche | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | RPCYSDCOGMD | 640 | — | — |
| 605-212 | A | Sioux Falls | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-213 | A | Harrisburg-Tea | Landline or VoIP | MIDCONTINENT COMMUNICATIONS. - SD (7076) | SIOUX FALLS | 640 | — | — |
| 605-214 | 0 | Harrisburg-Tea | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-214 | 1 | Harrisburg-Tea | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-214 | 2 | Harrisburg-Tea | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-214 | 3 | Harrisburg-Tea | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-214 | 4 | Harrisburg-Tea | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-214 | 5 | Harrisburg-Tea | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-214 | 6 | Harrisburg-Tea | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-214 | 7 | Harrisburg-Tea | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-214 | 8 | Harrisburg-Tea | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-214 | 9 | Harrisburg-Tea | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SXFLSDCONMD | 640 | — | — |
| 605-214 | A | Harrisburg-Tea | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
| 605-215 | 0 | Sioux Falls | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-215 | 1 | Sioux Falls | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - SD (106F) | SXFLSDCHIMD | 640 | — | — |
| 605-215 | 2 | Sioux Falls | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (6569) | SXFLSDCOX9X | 640 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
745
Assignment Blocks
3,617
Rate Centers
270
Carriers of Record
93
| Type | Blocks | Share |
|---|---|---|
| Landline | 829 | 23% |
| Landline or VoIP | 1,427 | 39% |
| Wireless | 1,361 | 38% |
| Carrier | Blocks |
|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 703 |
| ONVOY, LLC - SD | 517 |
| QWEST CORPORATION | 411 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 390 |
| BANDWIDTH.COM CLEC, LLC - SD | 168 |
| AERIAL COMMUNICATIONS, INC. | 160 |
| JAMES VALLEY COOPERATIVE TELEPHONE COMPANY | 130 |
| LEVEL 3 COMMUNICATIONS, LLC - SD | 94 |
| MIDCONTINENT COMMUNICATIONS. - SD | 81 |
| TERRA NOVA TELECOM INC. | 79 |
| 83 other carriers | 884 |
Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.
| Rate Center | Prefixes | Blocks |
|---|---|---|
| Sioux Falls | 92 | 606 |
| Rapid City | 50 | 331 |
| Aberdeen | 22 | 168 |
| Spearfish | 20 | 109 |
| Watertown | 17 | 90 |
| Huron | 15 | 88 |
| Pierre | 15 | 91 |
| Yankton | 14 | 70 |
| Mitchell | 13 | 76 |
| Brookings | 11 | 54 |
| Harrisburg-Tea | 11 | 89 |
| North Sioux City | 10 | 29 |
| Vermillion | 10 | 77 |
| Flandreau | 9 | 68 |
| Sturgis | 9 | 79 |
| Madison | 8 | 68 |
| Martin | 8 | 37 |
| Milbank | 8 | 53 |
| Redfield | 8 | 84 |
| Belle Fourche | 7 | 50 |
| Canton | 5 | 32 |
| Chamberlain | 5 | 41 |
| Lake Preston | 5 | 37 |
| Miller | 5 | 39 |
| Mobridge | 5 | 14 |
| Sisseton | 5 | 22 |
| Arlington | 4 | 35 |
| Big Stone City | 4 | 27 |
| Dupree | 4 | 12 |
| Elk Point | 4 | 34 |
| Fort Thompson | 4 | 15 |
| Highmore | 4 | 15 |
| Hill City | 4 | 37 |
| Lake Andes | 4 | 24 |
| Platte | 4 | 8 |
| Salem | 4 | 12 |
| Webster | 4 | 19 |
| Winner | 4 | 20 |
| Beresford | 3 | 8 |
| Bowdle | 3 | 11 |
| Brandon | 3 | 6 |
| Britton | 3 | 7 |
| Castlewood | 3 | 5 |
| Clark | 3 | 9 |
| Custer | 3 | 16 |
| De Smet | 3 | 32 |
| Gettysburg | 3 | 9 |
| Glenham | 3 | 17 |
| Gregory | 3 | 12 |
| Hartford | 3 | 16 |
| Hot Springs | 3 | 18 |
| Howard | 3 | 7 |
| Iroquois | 3 | 29 |
| Kimball | 3 | 18 |
| Lennox | 3 | 9 |
| McIntosh | 3 | 33 |
| Mission | 3 | 17 |
| North Valentine | 3 | 22 |
| Onida | 3 | 3 |
| Pine Ridge | 3 | 3 |
| Volga | 3 | 26 |
| Armour | 2 | 4 |
| Baltic | 2 | 2 |
| Brookings Rural | 2 | 4 |
| Bryant-Willow Lake | 2 | 2 |
| Cavour | 2 | 16 |
| Centerville | 2 | 2 |
| Colton | 2 | 14 |
| Crooks | 2 | 2 |
| Dell Rapids | 2 | 16 |
| Eagle Butte | 2 | 7 |
| Elkton | 2 | 5 |
| Estelline | 2 | 5 |
| Hayti | 2 | 3 |
| Ipswich | 2 | 4 |
| Kadoka | 2 | 5 |
| Kyle | 2 | 2 |
| Lake Norden | 2 | 4 |
| Murdo | 2 | 5 |
| New Underwood | 2 | 3 |
| Parkston | 2 | 5 |
| Roscoe | 2 | 4 |
| Roslyn | 2 | 4 |
| Selby | 2 | 3 |
| Tyndall | 2 | 11 |
| Viborg | 2 | 2 |
| Wakonda | 2 | 2 |
| Wall | 2 | 12 |
| Waubay | 2 | 7 |
| West Jasper | 2 | 18 |
| White | 2 | 3 |
| Wolsey | 2 | 2 |
| Worthing | 2 | 3 |
| Academy | 1 | 1 |
| Alcester | 1 | 1 |
| Alexandria | 1 | 1 |
| Alpena | 1 | 1 |
| Alsen | 1 | 1 |
| Andover | 1 | 11 |
| Ardmore | 1 | 1 |
| Artesian | 1 | 1 |
| Astoria | 1 | 1 |
| Avon | 1 | 1 |
| Belvidere | 1 | 1 |
| Beresford Rural | 1 | 10 |
| Bison | 1 | 1 |
| Blunt | 1 | 1 |
| Bonesteel | 1 | 1 |
| Bradley | 1 | 1 |
| Brandt | 1 | 1 |
| Bridgewater | 1 | 1 |
| Bristol | 1 | 11 |
| Buffalo | 1 | 1 |
| Buffalo Gap | 1 | 1 |
| Burke | 1 | 1 |
| Camp Crook | 1 | 1 |
| Canistota | 1 | 1 |
| Canova | 1 | 1 |
| Center | 1 | 1 |
| Chester | 1 | 1 |
| Claire City | 1 | 1 |
| Claremont | 1 | 11 |
| Clayton | 1 | 1 |
| Clear Lake | 1 | 1 |
| Clearfield | 1 | 1 |
| Columbia | 1 | 11 |
| Conde | 1 | 11 |
| Corsica | 1 | 1 |
| Creighton | 1 | 1 |
| Cresbard | 1 | 1 |
| Delmont | 1 | 1 |
| Doland | 1 | 11 |
| East Newcastle | 1 | 1 |
| Edgemont | 1 | 1 |
| Emery | 1 | 1 |
| Enning | 1 | 1 |
| Ethan | 1 | 1 |
| Eureka | 1 | 1 |
| Faith | 1 | 1 |
| Faith Rural | 1 | 1 |
| Faulkton | 1 | 1 |
| Ferney | 1 | 11 |
| Florence | 1 | 1 |
| Flyger | 1 | 1 |
| Forestburg | 1 | 1 |
| Frederick | 1 | 11 |
| Freeman | 1 | 1 |
| Gann Valley | 1 | 1 |
| Garretson | 1 | 1 |
| Gary | 1 | 1 |
| Goodwin | 1 | 1 |
| Groton | 1 | 11 |
| Harrold | 1 | 1 |
| Hayes | 1 | 1 |
| Hecla | 1 | 11 |
| Hermosa | 1 | 1 |
| Herreid | 1 | 1 |
| Hitchcock | 1 | 1 |
| Hosmer | 1 | 1 |
| Houghton | 1 | 11 |
| Hoven | 1 | 1 |
| Hudson | 1 | 1 |
| Humboldt | 1 | 1 |
| Hurley | 1 | 1 |
| Interior | 1 | 1 |
| Irene | 1 | 1 |
| Isabel | 1 | 1 |
| Jefferson | 1 | 1 |
| Kennebec | 1 | 1 |
| Keystone | 1 | 1 |
| Langford | 1 | 1 |
| Laplant | 1 | 1 |
| Lebanon | 1 | 1 |
| Lemmon | 1 | 1 |
| Leola | 1 | 1 |
| Lesterville | 1 | 1 |
| Letcher | 1 | 1 |
| Long Lake | 1 | 1 |
| Long Valley | 1 | 1 |
| Marion | 1 | 1 |
| Maurine | 1 | 1 |
| McLaughlin | 1 | 1 |
| Meadow | 1 | 1 |
| Mellette | 1 | 11 |
| Menno | 1 | 1 |
| Midland | 1 | 1 |
| Milesville | 1 | 1 |
| Mound City | 1 | 1 |
| Mount Vernon | 1 | 1 |
| New Effington | 1 | 1 |
| New Holland | 1 | 1 |
| Newell | 1 | 1 |
| Nisland | 1 | 1 |
| North Bristow | 1 | 1 |
| North Cody | 1 | 1 |
| North Crookston | 1 | 1 |
| North Gordon | 1 | 1 |
| North Kilgore | 1 | 1 |
| North Larchwood | 1 | 1 |
| North Naper | 1 | 1 |
| Nunda | 1 | 1 |
| Oelrichs | 1 | 1 |
| Oldham-Ramona | 1 | 1 |
| Onaka | 1 | 1 |
| Oral | 1 | 1 |
| Orient | 1 | 1 |
| Parker | 1 | 1 |
| Peever | 1 | 1 |
| Philip | 1 | 1 |
| Pierpont | 1 | 1 |
| Plankinton | 1 | 1 |
| Pollock | 1 | 1 |
| Presho | 1 | 1 |
| Pukwana | 1 | 1 |
| Quinn | 1 | 1 |
| Ree Heights | 1 | 1 |
| Reliance | 1 | 1 |
| Revillo | 1 | 1 |
| Rosebud | 1 | 1 |
| Rosholt | 1 | 1 |
| Scotland | 1 | 1 |
| Seneca | 1 | 1 |
| Sinai | 1 | 1 |
| Sorum | 1 | 1 |
| South Ashley | 1 | 1 |
| South Ellendale | 1 | 1 |
| South Forbes | 1 | 1 |
| South Forman | 1 | 1 |
| South Guelph | 1 | 1 |
| South Hettinger | 1 | 1 |
| South Ladd | 1 | 1 |
| South Lidgerwood | 1 | 1 |
| South Nelvik | 1 | 1 |
| South Reeder | 1 | 1 |
| South Scranton | 1 | 1 |
| South Shore | 1 | 1 |
| South Venturia | 1 | 1 |
| Spencer | 1 | 1 |
| Springfield | 1 | 1 |
| Stickney | 1 | 1 |
| Stockholm | 1 | 1 |
| Summit | 1 | 1 |
| Tabor | 1 | 1 |
| Timber Lake | 1 | 11 |
| Tolstoy | 1 | 1 |
| Toronto | 1 | 1 |
| Tripp | 1 | 1 |
| Tulare | 1 | 1 |
| Turton | 1 | 11 |
| Valley Springs | 1 | 1 |
| Veblen | 1 | 1 |
| Vivian | 1 | 1 |
| Wagner | 1 | 1 |
| Wasta | 1 | 1 |
| Wentworth | 1 | 1 |
| Wessington | 1 | 1 |
| Wessington Springs | 1 | 1 |
| West Akron | 1 | 10 |
| West Browns Valley | 1 | 1 |
| West Hawarden | 1 | 9 |
| West Hendricks | 1 | 1 |
| West Marietta | 1 | 1 |
| White Lake | 1 | 1 |
| White River | 1 | 1 |
| Wicksville | 1 | 1 |
| Wilmot | 1 | 1 |
| Winfred | 1 | 1 |
| Witten | 1 | 1 |
| Wood | 1 | 1 |
| Woonsocket | 1 | 1 |
A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.
Area code 605 is a North American Numbering Plan (NANP) telephone area code assigned to South Dakota, United States. It is the sole area code assigned to South Dakota, covering the entire state or province under a single numbering plan area.
Yes. 605 is an active North American Numbering Plan (NANP) area code, currently assigned to South Dakota, United States. It is safe to answer or dial calls using this area code.
Area code 605 covers 270 cities and communities in South Dakota, including Aberdeen, Academy, Alcester, Alexandria, Alpena, and 265 more localities. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 605 area code observe Central Time (IANA timezone: America/Chicago). Central Time is UTC−6 in winter (CST) and UTC−5 in summer (CDT). When placing a call to a 605 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within South Dakota, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 605 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 605 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 605 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +16055550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.