| #1 | Stanley County, South Dakota | 3,015 | $87,712 | 75.6 |
| #2 | Marshall County, South Dakota | 4,344 | $78,156 | 75.5 |
| #3 | Hand County, South Dakota | 3,140 | $74,635 | 73.9 |
| #4 | Harding County, South Dakota | 1,148 | $80,441 | 71.8 |
| #5 | Douglas County, South Dakota | 2,828 | $86,442 | 69.2 |
| #6 | Sanborn County, South Dakota | 2,384 | $78,750 | 69 |
| #7 | Hamlin County, South Dakota | 6,373 | $87,101 | 68.8 |
| #8 | Edmunds County, South Dakota | 4,048 | $81,630 | 66.5 |
| #9 | Hughes County, South Dakota | 17,664 | $81,395 | 64.9 |
| #10 | Lincoln County, South Dakota | 70,638 | $99,166 | 64.6 |
| #11 | Jerauld County, South Dakota | 1,772 | $73,750 | 64.3 |
| #12 | Potter County, South Dakota | 2,388 | $72,045 | 63.3 |
| #13 | Miner County, South Dakota | 2,300 | $76,140 | 62.4 |
| #14 | Hanson County, South Dakota | 3,472 | $81,071 | 62.2 |
| #15 | McCook County, South Dakota | 5,751 | $83,852 | 60.7 |
| #16 | Union County, South Dakota | 17,081 | $89,636 | 60.4 |
| #17 | Sully County, South Dakota | 1,526 | $72,578 | 58.9 |
| #18 | Spink County, South Dakota | 6,219 | $70,139 | 58.6 |
| #19 | Deuel County, South Dakota | 4,328 | $83,112 | 57.7 |
| #20 | Grant County, South Dakota | 7,563 | $75,028 | 57.3 |
| #21 | Campbell County, South Dakota | 1,593 | $68,929 | 57.2 |
| #22 | Kingsbury County, South Dakota | 5,244 | $74,000 | 56.9 |
| #23 | Hyde County, South Dakota | 1,191 | $73,472 | 56.8 |
| #24 | Hutchinson County, South Dakota | 7,404 | $73,977 | 56 |
| #25 | Lake County, South Dakota | 10,972 | $76,808 | 55.8 |
| #26 | Aurora County, South Dakota | 2,642 | $72,885 | 55.7 |
| #27 | Haakon County, South Dakota | 1,722 | $65,625 | 54.2 |
| #28 | McPherson County, South Dakota | 2,145 | $66,906 | 54.2 |
| #29 | Brule County, South Dakota | 5,283 | $73,720 | 54.1 |
| #30 | Codington County, South Dakota | 28,767 | $72,727 | 52.5 |
| #31 | Minnehaha County, South Dakota | 203,289 | $76,880 | 52.3 |
| #32 | Butte County, South Dakota | 10,676 | $75,652 | 51.2 |
| #33 | Yankton County, South Dakota | 23,414 | $72,821 | 50.4 |
| #34 | Custer County, South Dakota | 8,892 | $84,112 | 50.3 |
| #35 | Turner County, South Dakota | 8,882 | $75,771 | 49.4 |
| #36 | Davison County, South Dakota | 19,952 | $66,208 | 49.1 |
| #37 | Moody County, South Dakota | 6,397 | $78,427 | 49.1 |
| #38 | Beadle County, South Dakota | 19,309 | $67,681 | 48 |
| #39 | Meade County, South Dakota | 30,546 | $74,790 | 47 |
| #40 | Gregory County, South Dakota | 4,016 | $62,917 | 46.7 |
| #41 | Perkins County, South Dakota | 3,001 | $66,908 | 46.7 |
| #42 | Bon Homme County, South Dakota | 7,044 | $64,435 | 45.5 |
| #43 | Jones County, South Dakota | 1,004 | $65,119 | 44.7 |
| #44 | Tripp County, South Dakota | 5,611 | $58,987 | 44.6 |
| #45 | Lawrence County, South Dakota | 27,233 | $73,384 | 44.2 |
| #46 | Brown County, South Dakota | 37,877 | $70,898 | 43.5 |
| #47 | Clark County, South Dakota | 3,917 | $70,726 | 43.5 |
| #48 | Pennington County, South Dakota | 113,512 | $74,517 | 42 |
| #49 | Walworth County, South Dakota | 5,271 | $65,026 | 40.1 |
| #50 | Lyman County, South Dakota | 3,724 | $67,143 | 38.7 |
| #51 | Brookings County, South Dakota | 35,353 | $70,064 | 38.4 |
| #52 | Fall River County, South Dakota | 7,258 | $67,917 | 37.8 |
| #53 | Roberts County, South Dakota | 10,221 | $65,130 | 36.6 |
| #54 | Day County, South Dakota | 5,437 | $66,033 | 36.4 |
| #55 | Oglala Lakota County, South Dakota | 13,491 | $41,417 | 35.3 |
| #56 | Dewey County, South Dakota | 5,205 | $54,104 | 34.5 |
| #57 | Mellette County, South Dakota | 1,943 | $54,076 | 34.5 |
| #58 | Charles Mix County, South Dakota | 9,281 | $64,038 | 34.1 |
| #59 | Todd County, South Dakota | 9,244 | $42,075 | 32.2 |
| #60 | Faulk County, South Dakota | 2,126 | $57,750 | 30.6 |
| #61 | Buffalo County, South Dakota | 1,808 | $47,045 | 30.4 |
| #62 | Bennett County, South Dakota | 3,345 | $53,750 | 29.9 |
| #63 | Corson County, South Dakota | 3,806 | $46,406 | 27.9 |
| #64 | Ziebach County, South Dakota | 2,377 | $53,958 | 27.9 |
| #65 | Jackson County, South Dakota | 2,802 | $35,417 | 25 |
| #66 | Clay County, South Dakota | 15,219 | $56,850 | 22.3 |