Highest Assets in South Dakota

Top nonprofits ranked by total assets

50 organizations
Across South Dakota, the latest Form 990 highest assets ranking covers 1,207 organizations, totaling $13.5B in combined assets (2026 filings). SANFORD GROUP RETURN leads at $3.8B.
Year: Latest 2024 2023 2022
# Organization Revenue Assets
1 SANFORD GROUP RETURN
EIN: 453791176 · SIOUX FALLS, SD
$5.7B $3.8B
2 Avera Health
EIN: 460422673 · Sioux Falls, SD
$285.3M $1.7B
3 Monument Health Rapid City Hospital Inc
EIN: 460319070 · Rapid City, SD
$1.1B $1.5B
4 Avera McKennan
EIN: 460224743 · Sioux Falls, SD
$1.5B $1.4B
5 SANFORD HEALTH FOUNDATION
EIN: 363297853 · SIOUX FALLS, SD
$214.4M $1.3B
6 THE EVANGELICAL LUTHERAN GOOD SAMARITAN SOCIETY
EIN: 450228055 · SIOUX FALLS, SD
$953.3M $1.1B
7 EAST RIVER ELECTRIC POWER COOPERATIVE INC
EIN: 460225402 · MADISON, SD
$356.9M $910.3M
8 SOUTH DAKOTA COMMUNITY FOUNDATION
EIN: 460398115 · Pierre, SD
$69.2M $886.1M
9 SANFORD
EIN: 271218956 · SIOUX FALLS, SD
$17.4M $667.4M
10 LEWIS & CLARK RURAL WATER SYSTEM
EIN: 363755632 · TEA, SD
$67.9M $622.4M
11 PRAIRIE LAKES HEALTH CARE SYSTEM INC
EIN: 460391067 · WATERTOWN, SD
$202.9M $461.7M
12 SOUTH DAKOTA STATE UNIVERSITY FOUNDATION
EIN: 460273801 · BROOKINGS, SD
$73.3M $411.9M
13 Sacred Heart Health Services
EIN: 460225483 · Yankton, SD
$148.4M $399.6M
14 SIOUX FALLS AREA COMMUNITY FOUNDATION INC
EIN: 311748533 · SIOUX FALLS, SD
$50.6M $390.9M
15 UNIVERSITY OF SOUTH DAKOTA FOUNDATION
EIN: 466018891 · VERMILLION, SD
$38.2M $367.5M
16 AUGUSTANA UNIVERSITY ASSOCIATION
EIN: 460224588 · SIOUX FALLS, SD
$140.9M $365.4M
17 SIOUX VALLEY SOUTHWESTERN ELECTRIC COOPERATIVE INC
EIN: 460189704 · COLMAN, SD
$106.1M $352.2M
18 THE SIGNATRY CHARITABLE TRUST
EIN: 825070897 · Sioux Falls, SD
$145.4M $340.6M
19 SOUTHEASTERN ELECTRIC COOPERATIVE INC
EIN: 460454373 · LENNOX, SD
$96.0M $274.3M
20 WEB WATER DEVELOPMENT ASSOCIATION INC
EIN: 460352027 · ABERDEEN, SD
$20.2M $239.4M
21 Avera Queen of Peace
EIN: 460224604 · Mitchell, SD
$159.9M $223.1M
22 GREAT PLAINS TRIBAL LEADERS HEALTH
EIN: 460420063 · RAPID CITY, SD
$127.1M $195.5M
23 WEST RIVER ELECTRIC ASSN INC
EIN: 460204517 · WALL, SD
$49.0M $179.3M
24 CHILDREN'S HOME FOUNDATION
EIN: 460366277 · SIOUX FALLS, SD
$16.7M $179.1M
25 SDSM&T CENTER FOR ALUMNI RELATIONS & ADVANCEMENT
EIN: 466011771 · RAPID CITY, SD
$29.3M $176.2M
26 PRESBYTERIAN RETIREMENT VILLAGE OF RAPID CITY
EIN: 460354383 · RAPID CITY, SD
$31.1M $158.7M
27 LIFESCAPE FOUNDATION
EIN: 460353254 · SIOUX FALLS, SD
$22.6M $155.2M
28 Avera St Luke's
EIN: 460224598 · Aberdeen, SD
$197.1M $150.1M
29 MID-DAKOTA RURAL WATER SYSTEM INC
EIN: 363584582 · MILLER, SD
$27.9M $146.3M
30 OGLALA LAKOTA COLLEGE
EIN: 237135915 · KYLE, SD
$49.6M $144.2M
31 CRAZY HORSE MEMORIAL FOUNDATION
EIN: 460220678 · CRAZY HORSE, SD
$13.2M $141.5M
32 Monument Health Network Inc
EIN: 460360899 · Rapid City, SD
$210.7M $138.9M
33 CENTRAL ELECTRIC COOPERATIVE INC
EIN: 411955109 · MITCHELL, SD
$42.4M $136.4M
34 NORTHERN ELECTRIC COOPERATIVE
EIN: 460151015 · BATH, SD
$31.4M $117.4M
35 HURON REGIONAL MEDICAL CENTER INC
EIN: 460345312 · HURON, SD
$53.6M $111.9M
36 SIOUX FALLS DEVELOPMENT FOUNDATION INC
EIN: 460243934 · SIOUX FALLS, SD
$9.3M $106.5M
37 SANFORD HEALTH FOUNDATION NORTH
EIN: 450398104 · SIOUX FALLS, SD
$8.8M $104.0M
38 Mni Waste' Water Company
EIN: 272535895 · Eagle Butte, SD
$3.5M $100.2M
39 Avera St Mary's
EIN: 460230199 · Pierre, SD
$122.1M $98.1M
40 UNIVERSITY OF SIOUX FALLS
EIN: 460224600 · SIOUX FALLS, SD
$41.1M $96.4M
41 THE EVANGELICAL LUTHERAN GOOD SAMARITAN FOUNDATION
EIN: 460422866 · SIOUX FALLS, SD
$6.0M $94.7M
42 AVERA HEALTH PLANS INC
EIN: 460451539 · SIOUX FALLS, SD
$342.3M $94.1M
43 DAKOTA WESLEYAN UNIVERSITY
EIN: 460224589 · MITCHELL, SD
$32.5M $89.2M
44 BLACK HILLS ELECTRIC COOPERATIVE INC
EIN: 460111503 · CUSTER, SD
$26.7M $83.4M
45 BROOKINGS HEALTH SYSTEM INVESTMENT AUTHORITY
EIN: 823923875 · Brookings, SD
$4.8M $81.9M
46 DAKOTA STATE UNIVERSITY FOUNDATION
EIN: 237299995 · MADISON, SD
$8.2M $81.8M
47 GROW SOUTH DAKOTA
EIN: 562667948 · SISSETON, SD
$10.0M $81.6M
48 Oglala Lakota Housing Authority
EIN: 301386293 · PINE RIDGE, SD
$38.3M $81.5M
49 MOUNT MARTY UNIVERSITY
EIN: 460283336 · YANKTON, SD
$37.9M $79.2M
50 St Benedict Health Center
EIN: 460226738 · Parkston, SD
$30.2M $77.5M
Data from IRS Form 990 filings. Click an organization name to view full details. © 2026 990 Finder by Trantor SpA.