AREA AND POPULATION OF SOUTH DAKOTA BY COUNTIES.
| County | Map Index. |
County Seat. | Area in square miles. |
Population. | |
| 1890. | 1900. | ||||
| *Armstrong | D 5 | ... | 1,460 | ..... | ..... |
| Aurora | G 6 | Plankinton | 724 | 5,045 | 1,011 |
| Beadle | G 5 | Huron | 1,270 | 9,586 | 8,081 |
| Bonhomme | H 7 | Tyndall | 569 | 9,057 | 10,379 |
| *Boreman | D 4 | ... | 1,231 | ..... | ..... |
| Brookings | J 5 | Brookings | 817 | 10,132 | 12,561 |
| Brown | G 4 | Aberdeen | 1,745 | 16,855 | 15,286 |
| Brule | F 6 | Chamberlain | 808 | 6,737 | 5,401 |
| Buffalo | F 5 | Gannvalley | 483 | 993 | 1,790 |
| Butte | B 5 | Bellefourche | 7,834 | 1,037 | 2,907 |
| Campbell | E 4 | Mound City | 765 | 3,510 | 4,527 |
| Charles Mix | G 6 | Wheeler | 1,123 | 4,178 | 8,498 |
| Choteau | .... | Now belongs to Butte Co. | ..... | 8 | ..... |
| Clark | H 5 | Clark | 973 | 6,728 | 6,942 |
| Clay | H 7 | Vermilion | 408 | 7,509 | 9,316 |
| Codington | H 4 | Watertown | 786 | 7,037 | 8,770 |
| Custer | B 6 | Custer | 1,612 | 4,891 | 2,728 |
| Davison | G 6 | Mitchell | 486 | 5,449 | 7,483 |
| Day | H 4 | Webster | 1,077 | 9,168 | 12,254 |
| Deuel | J 5 | Clearlake | 621 | 4,574 | 6,656 |
| *Dewey | D 4 | ... | 2,219 | ..... | ..... |
| Douglas | G 6 | Armour | 445 | 4,600 | 5,012 |
| Edmunds | F 4 | Ipswich | 1,176 | 4,399 | 4,916 |
| Ewing | .... | Now belongs to Butte Co. | ..... | 16 | ..... |
| Fall River | B 6 | Hot Springs | 1,757 | 4,478 | 3,541 |
| Faulk | F 4 | Faulkton | 1,010 | 4,062 | 3,547 |
| Grant | J 4 | Millbank | 694 | 6,814 | 9,103 |
| Gregory | F 6 | Fairfax | 1,004 | 295 | 2,211 |
| Hamlin | H 5 | Castlewood | 543 | 4,625 | 5,945 |
| Hand | F 5 | Miller | 1,418 | 6,546 | 4,525 |
| Hanson | H 6 | Alexandria | 486 | 4,267 | 4,947 |
| Hughes | E 5 | Pierre | 765 | 5,044 | 3,684 |
| Hutchinson | H 6 | Olivet | 817 | 10,469 | 11,897 |
| Hyde | F 5 | Highmore | 875 | 1,860 | 1,492 |
| *Jackson | D 6 | ... | ... | 30 | ..... |
| Jerauld | G 5 | Wessington Springs | 548 | 3,605 | 2,798 |
| Kingsbury | H 5 | Desmet | 834 | 8,562 | 9,866 |
| Lake | H 5 | Madison | 549 | 7,508 | 9,137 |
| Lawrence | B 5 | Deadwood | 814 | 11,673 | 17,897 |
| Lincoln | J 6 | Canton | 579 | 9,143 | 12,161 |
| *Lugenbeel | D 6 | ... | 1,066 | ..... | ..... |
| Lyman | F 6 | Oacoma | 3,456 | 233 | 2,632 |
| McCook | H 6 | Salem | 575 | 6,448 | 8,682 |
| McPherson | F 4 | Leola | 1,146 | 5,940 | 6,327 |
| Marshall | H 4 | Britton | 880 | 4,544 | 5,942 |
| Meade | B 5 | Sturgis | 3,003 | 4,640 | 4,907 |
| *Meyer | E 6 | ... | 1,407 | ..... | ..... |
| Miner | H 6 | Howard | 569 | 5,165 | 5,864 |
| Minnehaha | J 6 | Sioux Falls | 802 | 21,879 | 23,926 |
| Moody | J 6 | Flandreau | 517 | 5,941 | 8,326 |
| Pennington | B 5 | Rapid City | 2,596 | 6,540 | 5,610 |
| Potter | E 4 | Gettysburg | 900 | 2,910 | 2,988 |
| *Pratt | .... | ... | ..... | 23 | ..... |
| Presho | .... | ... | ..... | 181 | ..... |
| *Pratt | .... | ... | ..... | 34 | ..... |
| Roberts | J 4 | Sisseton Agency | 1,102 | 1,997 | 12,216 |
| Sanborn | G 5 | Woonsocket | 576 | 4,610 | 4,464 |
| Schnasse | D 4 | ... | 1,563 | ..... | ..... |
| *Shannon | C 6 | ... | 1,066 | ..... | ..... |
| Spink | C 5 | Redfield | 1,518 | 10,581 | 9,487 |
| Stanley | E 5 | Fort Pierre | 4,882 | 1,028 | 1,319 |
| *Sterling | D 5 | ... | ..... | 96 | ..... |
| Sully | E 5 | Onida | 1,052 | 2,412 | 1,715 |
| Todd | .... | ... | ..... | 188 | ..... |
| *Tripp | E 6 | ... | 1,480 | ..... | ..... |
| Turner | H 6 | Parker | 624 | 10,256 | 13,175 |
| Union | J 7 | Elkpoint | 447 | 9,130 | 11,163 |
| Walworth | E 4 | Bangor | 745 | 2,153 | 3,839 |
| *Washabaugh | .... | ... | 1,228 | ..... | ..... |
| *Washington | C 6 | ... | 1,540 | 40 | ..... |
| Yankton | H 7 | Yankton | 515 | 10,414 | 12,649 |
| Ziebach | C 5 | ... | .... | 510 | ..... |
| Cheyenne River Indian reservation | D 4 | ... | .... | ..... | 2,357 |
| Pine Ridge Indian reservation | C 6 | ... | .... | ..... | 6,827 |
| Rosebud Indian reservation | E 6 | ... | .... | ..... | 5,201 |
| Standing Rock Indian reservation | D 3 | ... | .... | ..... | 1,658 |
*Counties as yet not fully organized; parts of Indian reservations.
