| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2019 |
Bureau Of Administration |
Mitchell School District 17-2 |
$19,869,319.98 |
South Dakota State Checkbook |
| 2024 |
Education |
Yankton School District 63-3 |
$19,697,045.42 |
South Dakota State Checkbook |
| 2018 |
Revenue |
City Of Aberdeen |
$19,646,639.98 |
South Dakota State Checkbook |
| 2017 |
Bureau Of Finance Management |
Duininck Inc |
$19,643,562.30 |
South Dakota State Checkbook |
| 2022 |
Education |
Douglas School Dist No 51-1 |
$19,632,861.02 |
South Dakota State Checkbook |
| 2025 |
Agriculture & Nat. Resources |
Web Water Development Assn Inc |
$19,450,077.88 |
South Dakota State Checkbook |
| 2025 |
Education |
Yankton School District 63-3 |
$19,397,921.66 |
South Dakota State Checkbook |
| 2021 |
Bureau Of Finance & Management |
City Of Rapid City |
$19,312,716.72 |
South Dakota State Checkbook |
| 2023 |
Agriculture & Nat. Resources |
Henry Carlson Construction Llc |
$19,290,949.08 |
South Dakota State Checkbook |
| 2019 |
Bureau Of Finance Management |
Heavy Constructors Inc |
$19,212,059.85 |
South Dakota State Checkbook |
| 2020 |
Revenue |
City Of Aberdeen |
$19,198,213.25 |
South Dakota State Checkbook |
| 2021 |
Revenue |
Minnehaha County Treasurer |
$19,198,101.11 |
South Dakota State Checkbook |
| 2019 |
Bureau Of Finance Management |
Loiseau Construction Inc |
$19,152,297.01 |
South Dakota State Checkbook |
| 2018 |
Bureau Of Administration |
Brandon Valley |
$19,146,384.32 |
South Dakota State Checkbook |
| 2025 |
Agriculture & Nat. Resources |
Mid-Dakota Rural Water System |
$19,113,835.51 |
South Dakota State Checkbook |
| 2021 |
Revenue |
City Of Watertown |
$19,048,645.49 |
South Dakota State Checkbook |
| 2023 |
Education |
Meade School District 46-1 |
$19,006,305.34 |
South Dakota State Checkbook |
| 2025 |
Transportation |
John Riley Construction Inc |
$18,953,604.74 |
South Dakota State Checkbook |
| 2021 |
Education |
Brookings School District 5-1 |
$18,934,044.91 |
South Dakota State Checkbook |
| 2016 |
Bureau Of Finance Management |
Heavy Constructors Inc |
$18,921,725.70 |
South Dakota State Checkbook |
| 2022 |
Education |
Brookings School District 5-1 |
$18,913,479.72 |
South Dakota State Checkbook |
| 2023 |
Education |
Douglas School Dist No 51-1 |
$18,861,563.16 |
South Dakota State Checkbook |
| 2023 |
Education |
Pierre School District 32-2 |
$18,844,259.91 |
South Dakota State Checkbook |
| 2023 |
Education |
Mitchell School District 17-2 |
$18,793,391.38 |
South Dakota State Checkbook |
| 2018 |
Bureau Of Administration |
Todd County School Dist 66-1 |
$18,777,724.22 |
South Dakota State Checkbook |
| 2024 |
Tourism |
K&H Llc |
$18,762,909.89 |
South Dakota State Checkbook |
| 2025 |
Transportation |
Rapid City Pierre & East Rr |
$18,747,811.18 |
South Dakota State Checkbook |
| 2022 |
Revenue |
City Of Brookings |
$18,697,185.35 |
South Dakota State Checkbook |
| 2024 |
Transportation |
Spencer Quarries Inc |
$18,645,813.75 |
South Dakota State Checkbook |
| 2022 |
Transportation |
Sioux Falls Regional Airport |
$18,583,447.52 |
South Dakota State Checkbook |
| 2018 |
Bureau Of Administration |
Harrisburg School District41-2 |
$18,568,983.68 |
South Dakota State Checkbook |
| 2016 |
Revenue |
Aberdeen-City Of |
$18,550,815.69 |
South Dakota State Checkbook |
| 2017 |
Bureau Of Administration |
Todd County School Dist 66-1 |
$18,433,000.15 |
South Dakota State Checkbook |
| 2016 |
Bureau Of Finance Management |
Bituminous Paving Inc |
$18,359,057.25 |
South Dakota State Checkbook |
| 2019 |
Revenue |
Mitchell-City Of |
$18,280,921.91 |
South Dakota State Checkbook |
| 2018 |
Bureau Of Finance Management |
Central Specialties Inc |
$18,262,849.75 |
South Dakota State Checkbook |
| 2019 |
Bureau Of Administration |
Yankton School District 63-3 |
$18,100,717.77 |
South Dakota State Checkbook |
| 2021 |
Education |
Mitchell School District 17-2 |
$18,039,814.77 |
South Dakota State Checkbook |
| 2017 |
Bureau Of Finance Management |
Loiseau Construction Inc |
$17,960,731.64 |
South Dakota State Checkbook |
| 2016 |
Bureau Of Finance Management |
Anderson Western Inc |
$17,894,834.26 |
South Dakota State Checkbook |
| 2025 |
Education |
Southeast Technical Institute |
$17,856,153.60 |
South Dakota State Checkbook |
| 2018 |
Bureau Of Administration |
Watertown School District 14-4 |
$17,851,965.94 |
South Dakota State Checkbook |
| 2018 |
Bureau Of Administration |
Douglas School Dist No 51-1 |
$17,829,695.43 |
South Dakota State Checkbook |
| 2024 |
Revenue |
Minnehaha County Treasurer |
$17,762,070.55 |
South Dakota State Checkbook |
| 2020 |
Education |
Huron School District 2-2 |
$17,717,229.87 |
South Dakota State Checkbook |
| 2016 |
Bureau Of Finance Management |
Loiseau Construction Inc |
$17,701,299.82 |
South Dakota State Checkbook |
| 2019 |
Bureau Of Administration |
Pierre School District 32-2 |
$17,689,698.80 |
South Dakota State Checkbook |
| 2020 |
Revenue |
Minnehaha County Treasurer |
$17,682,902.32 |
South Dakota State Checkbook |
| 2018 |
Bureau Of Finance Management |
Knife River Midwest Llc |
$17,629,045.59 |
South Dakota State Checkbook |
| 2017 |
Bureau Of Administration |
Brandon Valley |
$17,625,031.64 |
South Dakota State Checkbook |
| 2022 |
Education |
Mitchell School District 17-2 |
$17,568,857.93 |
South Dakota State Checkbook |
| 2024 |
Education |
Tea Area School Dist 41-5 |
$17,564,430.45 |
South Dakota State Checkbook |
| 2019 |
Bureau Of Finance Management |
Bowes Construction Inc |
$17,530,990.89 |
South Dakota State Checkbook |
| 2022 |
Education |
Pierre School District 32-2 |
$17,353,098.51 |
South Dakota State Checkbook |
| 2020 |
Education |
Douglas School Dist No 51-1 |
$17,326,555.56 |
South Dakota State Checkbook |
| 2021 |
Bureau Of Finance & Management |
Sanford Medical Center |
$17,318,555.00 |
South Dakota State Checkbook |
| 2023 |
Transportation |
Sioux Falls Regional Airport |
$17,282,039.49 |
South Dakota State Checkbook |
| 2024 |
Transportation |
Asphalt Paving & Materials Co |
$17,278,818.01 |
South Dakota State Checkbook |
| 2020 |
Transportation |
Bx Civil & Construction |
$17,261,638.79 |
South Dakota State Checkbook |
| 2020 |
Education |
Watertown School District 14-4 |
$17,260,740.19 |
South Dakota State Checkbook |
| 2021 |
Tourism |
Lawrence & Schiller Inc |
$17,199,164.93 |
South Dakota State Checkbook |
| 2023 |
Transportation |
T & R Contracting Inc |
$17,159,659.17 |
South Dakota State Checkbook |
| 2016 |
Bureau Of Administration |
Todd County School Dist 66-1 |
$17,155,254.45 |
South Dakota State Checkbook |
| 2019 |
Bureau Of Administration |
Meade School District 46-1 |
$17,143,860.08 |
South Dakota State Checkbook |
| 2023 |
Education |
Yankton School District 63-3 |
$17,140,372.97 |
South Dakota State Checkbook |
| 2017 |
Bureau Of Administration |
Douglas School Dist No 51-1 |
$17,124,690.89 |
South Dakota State Checkbook |
| 2025 |
Education |
Pierre School District 32-2 |
$16,900,560.33 |
South Dakota State Checkbook |
| 2025 |
Education |
Tea Area School Dist 41-5 |
$16,877,594.40 |
South Dakota State Checkbook |
| 2020 |
Transportation |
Riley Bros Construction Inc |
$16,857,813.69 |
South Dakota State Checkbook |
| 2024 |
Transportation |
Foothills Contracting Inc |
$16,854,767.29 |
South Dakota State Checkbook |
| 2025 |
Revenue |
City Of Mitchell |
$16,841,876.54 |
South Dakota State Checkbook |
| 2025 |
Health |
Mcgough Construction Co Llc |
$16,832,619.62 |
South Dakota State Checkbook |
| 2017 |
Bureau Of Administration |
Watertown School District 14-4 |
$16,803,948.45 |
South Dakota State Checkbook |
| 2023 |
Transportation |
D&G Concrete Construction Inc |
$16,756,813.37 |
South Dakota State Checkbook |
| 2019 |
Revenue |
Minnehaha County Treasurer |
$16,739,608.50 |
South Dakota State Checkbook |
| 2016 |
Bureau Of Finance Management |
M A Mortenson Company |
$16,737,762.16 |
South Dakota State Checkbook |
| 2025 |
Transportation |
Martin Construction Inc |
$16,734,023.44 |
South Dakota State Checkbook |
| 2017 |
Revenue |
Watertown--city Of |
$16,666,755.23 |
South Dakota State Checkbook |
| 2020 |
Revenue |
Watertown--City Of |
$16,628,520.14 |
South Dakota State Checkbook |
| 2025 |
Social Services |
Redmane Technology Llc |
$16,616,549.36 |
South Dakota State Checkbook |
| 2021 |
Education |
Pierre School District 32-2 |
$16,609,962.12 |
South Dakota State Checkbook |
| 2025 |
Education |
Mitchell School District 17-2 |
$16,551,391.03 |
South Dakota State Checkbook |
| 2021 |
Transportation |
Central Specialties Inc |
$16,541,656.88 |
South Dakota State Checkbook |
| 2019 |
Bureau Of Finance Management |
Central Specialties Inc |
$16,455,913.82 |
South Dakota State Checkbook |
| 2024 |
Transportation |
Border States Paving Inc |
$16,448,167.99 |
South Dakota State Checkbook |
| 2018 |
Bureau Of Administration |
Oglala Lakota County |
$16,425,256.06 |
South Dakota State Checkbook |
| 2018 |
Bureau Of Administration |
Huron School District 2-2 |
$16,406,892.98 |
South Dakota State Checkbook |
| 2018 |
Revenue |
Watertown--City Of |
$16,399,732.76 |
South Dakota State Checkbook |
| 2021 |
Education |
Yankton School District 63-3 |
$16,359,287.51 |
South Dakota State Checkbook |
| 2017 |
Bureau Of Administration |
Oglala Lakota County |
$16,321,008.51 |
South Dakota State Checkbook |
| 2022 |
Education |
Meade School District 46-1 |
$16,320,138.22 |
South Dakota State Checkbook |
| 2025 |
Corrections |
Nelco Architecture Inc |
$16,298,950.06 |
South Dakota State Checkbook |
| 2025 |
Transportation |
Oftedal Construction Inc |
$16,260,015.71 |
South Dakota State Checkbook |
| 2016 |
Bureau Of Administration |
Aberdeen School District 6-1 |
$16,188,200.86 |
South Dakota State Checkbook |
| 2017 |
Bureau Of Administration |
Harrisburg School District41-2 |
$16,185,294.01 |
South Dakota State Checkbook |
| 2025 |
Transportation |
Foothills Contracting Inc |
$16,166,489.74 |
South Dakota State Checkbook |
| 2021 |
Transportation |
Commercial Asphalt & Materials |
$16,050,107.67 |
South Dakota State Checkbook |
| 2020 |
Education |
Brookings School District 5-1 |
$16,023,239.15 |
South Dakota State Checkbook |
| 2021 |
Education |
Meade School District 46-1 |
$15,988,925.79 |
South Dakota State Checkbook |
| 2024 |
Revenue |
City Of Mitchell |
$15,985,799.77 |
South Dakota State Checkbook |