Area code 605
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Area code 605 is the telephone area code serving the entire state of South Dakota. This state is one of a handful that are single-state, single LATA, single area code areas.
Rapid City prefixes in area code (605)-209 341 342 343 348 355 381 385 388 389 390 391 393 394 399 415 430 431 484 545 593 716 718 719 721 727 737 786 787 791 863 877 923 939
Sioux Falls prefixes in area code (605)-201 212 221 231 241 251 254 261 271 274 275 306 310 321 322 323 328 330 331 332 333 334 335 336 338 339 351 357 359 360 361 362 366 367 370 371 373 376 413 444 509 521 553 575 595 610 728 731 759 782 846 929 940 941 965 977 978 988
Watertown prefixes in area code (605)-520 880 881 882 884 886 868 878 237 970 818
| State of South Dakota area code: 605 | ||
|---|---|---|
| North: 701 | ||
| West: 406, 307 | Area code 605 | East: 320, 507 |
| South: 308, 402 | ||
| State of North Dakota area code: 701 | ||
| State of Nebraska area codes: 308, 402 | ||
| State of Minnesota area codes: 218, 320, 507, 612, 651, 763, 952 | ||
| State of Montana area code: 406 | ||
| State of Wyoming area code: 307 | ||
