City | 2024 Population |
|---|---|
| Wachter | 32 |
| Wacker | 17 |
| Wagner | 1,389 |
| Wahehe | 265 |
| Wakonda | 346 |
| Wakpala | 182 |
| Waldro | 82 |
| Wall | 692 |
| Wall Lake | 1,233 |
| Wallace | 94 |
| Walnut Grove | 98 |
| Walshtown | 150 |
| Wanblee | 487 |
| Ward | 43 |
| Warner | 467 |
| Warren | 45 |
| Washington | 42 |
| Wasta | 64 |
| Watauga | 27 |
| Watertown | 23,363 |
| Waubay | 483 |
| Wayne | 238 |
| Weaver | 36 |
| Weber | 242 |
| Webster | 1,702 |
| Wellington | 269 |
| Wells | 22 |
| Wentworth | 168 |
| Wesley | 31 |
| Wessington | 201 |
| Wessington Springs | 759 |
| West Brule | 679 |
| West Butte | 3,317 |
| West Corson | 250 |
| West Gregory | 440 |
| West Hanson | 46 |
| West Hughes | 2,836 |
| West Lyman | 212 |
| West McPherson | 254 |
| West Pennington | 1,701 |
| West Point | 105 |
| West Rondell | 68 |
| West Yankton | 3,617 |
| Weston | 207 |
| Westover | 10 |
| Westport | 85 |
| Weta | 19 |
| Wetonka | 14 |
| Wheatland | 79 |
| Wheaton | 30 |
| White | 548 |
| White Butte | 19 |
| White Hill | 6 |
| White Horse | 81 |
| White Lake | 413 |
| White River | 522 |
| White Rock | 8 |
| White Swan | 737 |
| Whitehorse | 49 |
| Whiteside | 39 |
| Whitewood | 967 |
| Wilbur | 250 |
| William Hamilton | 6 |
| Williams Creek | 41 |
| Willow Creek | 48 |
| Willow Lake | 264 |
| Wilmot | 413 |
| Wilson | 24 |
| Winfred | 36 |
| Winner | 2,872 |
| Winsor | 163 |
| Wismer | 32 |
| Witten | 32 |
| Wittenberg | 290 |
| Wolf Creek | 237 |
| Wolsey | 460 |
| Wonderland Homes | 865 |
| Wood | 41 |
| Woodland | 62 |
| Woonsocket | 676 |
| Worthen | 126 |
| Worthing | 947 |
| Wortman | 22 |
| Wounded Knee | 559 |