South Dakota Employer EIN Lookup
Use this South DakotaEIN lookup to find an employer’s Employer Identification Number from its public Form 5500 filing. 2,084 employers based in South Dakota have filed a Form 5500, covering 2,528 retirement and health plans with $11.3B in reported assets. The largest are listed below with their EIN — open any employer to see the full filing.
Employers
2,084
Plans
2,528
Total assets
$11.3B
Largest employers in South Dakota by EIN
Form 5500 search →| Employer | EIN | City | Plans | Participants | Assets |
|---|---|---|---|---|---|
| BLACK HILLS CORPORATION | 46-0458824 | RAPID CITY | 6 | 10,028 | $1.1B |
| MONUMENT HEALTH, INC. | 20-1487506 | RAPID CITY | 2 | 7,953 | $469.5M |
| THE EVANGELICAL LUTHERAN GOOD SAMARITAN SOCIETY | 45-0228055 | SIOUX FALLS | 1 | 10,778 | $278.3M |
| POET BIOREFINING LLC | 47-4454378 | SIOUX FALLS | 2 | 4,331 | $265.7M |
| DAKTRONICS, INC. | 46-0306862 | BROOKINGS | 2 | 4,498 | $262.6M |
| FIRST PREMIER BANK | 46-0119480 | SIOUX FALLS | 2 | 3,288 | $240.6M |
| ADVISORTRUST, INC. | 46-4091337 | SIOUX FALLS | 7 | 7,470 | $199.8M |
| PATHWARD, NATIONAL ASSOCIATION | 42-0747941 | SIOUX FALLS | 2 | 2,393 | $150.9M |
| SHOWPLACE WOOD PRODUCTS, INC. | 46-0453066 | HARRISBURG | 3 | 1,789 | $139.0M |
| FIRST BANK & TRUST | 46-0187030 | BROOKINGS | 1 | 710 | $113.1M |
| RE/SPEC INC. | 46-0315848 | RAPID CITY | 3 | 1,530 | $112.4M |
| THE FIRST NATIONAL BANK IN SIOUX FALLS | 46-0189380 | SIOUX FALLS | 2 | 543 | $110.2M |
| YANKTON MEDICAL CLINIC P.C. | 46-0363830 | YANKTON | 2 | 612 | $107.2M |
| DACOTAH BANKS, INC. | 46-0279766 | ABERDEEN | 3 | 1,774 | $107.0M |
| PERFORMANCE BANKERS, INC. | 46-0373528 | PIERRE | 6 | 3,209 | $101.2M |
| AGC OF SOUTH DAKOTA | 99-1294972 | SIOUX FALLS | 1 | 1,873 | $96.0M |
| SONIFI SOLUTIONS, INC. | 46-0371161 | SIOUX FALLS | 3 | 1,844 | $95.2M |
| FIRST DAKOTA FINANCIAL CORPORATION | 46-0402899 | YANKTON | 1 | 368 | $93.2M |
| CNOS, PC | 42-1480644 | DAKOTA DUNES | 2 | 564 | $86.6M |
| ASSOC. GENERAL CONTRACTORS OF SD, INC. BUILDING | 46-0106838 | SIOUX FALLS | 1 | 1,328 | $84.1M |
| EMPIRICAL TECHNOLOGY, INC. | 94-2740498 | DAKOTA DUNES | 5 | 4,548 | $84.0M |
| RAPID CITY MEDICAL CENTER, LLP | 46-0218851 | RAPID CITY | 3 | 1,064 | $74.6M |
| ORTHOPEDIC INSTITUTE | 46-0316404 | SIOUX FALLS | 2 | 454 | $74.0M |
| BILLION MOTORS, INC. | 46-0307139 | SIOUX FALLS | 5 | 3,620 | $71.9M |
| VANTAGE POINT SOLUTIONS, INC. | 22-3860061 | MITCHELL | 3 | 1,199 | $71.3M |
| AGTEGRA COOPERATIVE | 46-0191930 | ABERDEEN | 2 | 1,681 | $69.1M |
| C&B OPERATIONS, LLC | 41-1992021 | GETTYSBURG | 2 | 1,847 | $68.9M |
| TRAIL KING INDUSTRIES, INC. | 46-0320593 | MITCHELL | 1 | 642 | $68.1M |
| VALLEY QUEEN CHEESE FACTORY, INC. | 46-0220490 | MILBANK | 5 | 1,252 | $66.5M |
| 1ST FINANCIAL BANK USA | 46-0133740 | DAKOTA DUNES | 2 | 480 | $65.7M |
| PRAIRIE LAKES HEALTHCARE SYSTEM | 46-0391067 | WATERTOWN | 6 | 4,660 | $62.0M |
| ROSENBAUER SOUTH DAKOTA, LLC | 46-0448012 | LYONS | 2 | 1,080 | $60.4M |
| BLACK HILLS FEDERAL CREDIT UNION | 46-0235529 | RAPID CITY | 10 | 2,961 | $60.3M |
| BANKWEST, INC. | 46-0177475 | PIERRE | 3 | 734 | $58.8M |
| PETE LIEN & SONS, INC. | 46-0271589 | RAPID CITY | 2 | 784 | $57.3M |
| O'CONNOR COMPANY, INC. | 46-0332893 | SIOUX FALLS | 3 | 429 | $57.1M |
| VERN EIDE MOTORCARS, INC. | 46-0281291 | SIOUX FALLS | 4 | 1,421 | $56.3M |
| LEWIS DRUGS, INC. | 46-0212323 | SIOUX FALLS | 4 | 2,278 | $56.1M |
| FISHBACK FINANCIAL CORPORATION | 46-0306542 | BROOKINGS | 2 | 1,249 | $56.0M |
| CORTRUST BANK NA | 46-0159100 | MITCHELL | 2 | 527 | $54.7M |
| SOUTH DAKOTA COUNCIL OF COMMUNITY BEHAVIORAL HEA | 46-0442372 | PIERRE | 1 | 1,810 | $52.6M |
| PRINCE MANUFACTURING CORPORATION | 42-0678168 | NORTH SIOUX CITY | 5 | 1,021 | $51.7M |
| HEART HOSPITAL OF SOUTH DAKOTA, LLC AVERA HEART HOSPITAL SOUTH DAKOTA | 56-2143771 | SIOUX FALLS | 2 | 1,174 | $51.5M |
| BLACK HILLS SURGICAL HOSPITAL, LLP | 46-0440466 | RAPID CITY | 5 | 813 | $51.0M |
| HARMS OIL COMPANY | 46-0342132 | BROOKINGS | 3 | 667 | $47.5M |
| INNOVATIVE SYSTEMS, LLC | 41-1920375 | MITCHELL | 1 | 202 | $46.5M |
| BIERSCHBACH EQUIPMENT & SUPPLY CO., INC. | 46-0354180 | SIOUX FALLS | 1 | 79 | $46.0M |
| GROSSENBURG IMPLEMENT, INC. | 46-0320279 | WINNER | 2 | 518 | $45.7M |
| DAVENPORT EVANS HURWITZ & SMITH LLP | 46-0235678 | SIOUX FALLS | 1 | 59 | $44.3M |
| MUTH ELECTRIC INC | 71-0893353 | MITCHELL | 2 | 750 | $42.5M |
| LIFESCAPE | 46-5151247 | SIOUX FALLS | 9 | 5,476 | $42.4M |
| THE RAMKOTA COMPANIES, INC. | 46-0282107 | SIOUX FALLS | 1 | 123 | $41.8M |
| RISK ADMINISTRATION SERVICES, INC. | 46-0407236 | SIOUX FALLS | 2 | 427 | $41.1M |
| RIDDLE'S GROUP, INC. | 46-0357804 | RAPID CITY | 2 | 814 | $40.5M |
| PLAINS COMMERCE BANK | 46-0108210 | SIOUX FALLS | 1 | 447 | $37.8M |
| AEROSTAR INTERNATIONAL, LLC | 46-0389205 | SIOUX FALLS | 2 | 502 | $36.9M |
| ANESTHESIOLOGY ASSOCIATES, INC | 46-0418791 | SIOUX FALLS | 2 | 38 | $36.0M |
| KETEL THORSTENSON, LLP | 46-0257538 | RAPID CITY | 2 | 281 | $35.5M |
| ANESTHESIA PHYSICIANS, LTD. | 46-0360629 | SIOUX FALLS | 2 | 39 | $34.8M |
| L.G. EVERIST, INCORPORATED | 46-0229601 | SIOUX FALLS | 7 | 2,593 | $34.7M |
| FURNITURE MART USA, INC. | 46-0346494 | SIOUX FALLS | 10 | 1,757 | $34.7M |
| SIOUX FALLS SPECIALTY HOSPITAL | 46-0382492 | SIOUX FALLS | 8 | 772 | $33.9M |
| REGENCY HOTEL MANAGEMENT, LLC | 46-0434895 | SIOUX FALLS | 1 | 3,434 | $33.0M |
| VIAFLEX, INC. | 61-1895716 | SIOUX FALLS | 2 | 888 | $32.9M |
| AMERICAN BANK & TRUST | 46-0108140 | SIOUX FALLS | 5 | 860 | $31.6M |
| KARL'S, INC. | 46-0307274 | GREGORY | 4 | 1,260 | $30.4M |
| SOUTH DAKOTA NETWORK, LLC | 46-0454662 | SIOUX FALLS | 2 | 225 | $30.1M |
| BLACK HILLS ORTHOPEDIC AND SPINE CENTER | 46-0335970 | RAPID CITY | 3 | 157 | $29.9M |
| SECURITY FIRST BANK | 47-0299375 | RAPID CITY | 2 | 478 | $29.7M |
| CONSUMERS SUPPLY DIST LLC | 45-3782648 | NORTH SIOUX CITY | 3 | 692 | $29.0M |
| STERLING COMPUTERS CORPORATION | 95-4634907 | NORTH SIOUX CITY | 2 | 574 | $28.8M |
| VANCE THOMPSON VISION CLINIC, PROF. LLC | 45-4527794 | SIOUX FALLS | 2 | 861 | $27.5M |
| HURON REGIONAL MEDICAL CENTER, INC. | 46-0345312 | HURON | 6 | 2,057 | $26.8M |
| PRIMARY SURGICAL, INC. | 46-0403563 | SIOUX FALLS | 2 | 228 | $26.7M |
| GCC DACOTAH, INC. | 46-0460381 | RAPID CITY | 1 | 29 | $26.3M |
| JOURNEY GROUP COMPANIES | 46-0189350 | SIOUX FALLS | 7 | 1,669 | $26.1M |
| GUNDERSON, PALMER, NELSON & ASHMORE | 46-0333525 | RAPID CITY | 1 | 39 | $25.5M |
| SURGICAL MANAGEMENT PROFESSIONALS, LLC | 20-2605266 | SIOUX FALLS | 1 | 383 | $25.2M |
| AVERA HEALTH PLANS, INC. | 46-0451539 | SIOUX FALLS | 1 | 401 | $24.3M |
| MOBRIDGE REGIONAL HOSPITAL | 46-0255944 | MOBRIDGE | 1 | 248 | $24.1M |
| DELTA DENTAL PLAN OF SOUTH DAKOTA | 46-0309258 | PIERRE | 1 | 81 | $23.9M |
| MADISON COMMUNITY HOSPITAL | 46-0228038 | MADISON | 5 | 661 | $23.6M |
| BIG STONE THERAPIES, INC. | 45-4199100 | BIG STONE CITY | 2 | 871 | $23.0M |
| FIRST FIDELITY BANK | 46-0115545 | BURKE | 1 | 111 | $22.7M |
| GPAC, LLC | 46-0412636 | SIOUX FALLS | 1 | 288 | $22.3M |
| JOHNSON FEED, INC. | 46-0325358 | CANTON | 2 | 642 | $21.8M |
| SOUTH DAKOTA SOYBEAN PROCESSORS LLC | 46-0462968 | VOLGA | 4 | 498 | $21.8M |
| SHUR-CO, LLC | 27-4029187 | YANKTON | 2 | 702 | $21.7M |
| SAWMILL TRUST COMPANY | 20-1660652 | SIOUX FALLS | 1 | 46 | $21.7M |
| UNIVERSITY OF SIOUX FALLS | 46-0224600 | SIOUX FALLS | 7 | 578 | $21.6M |
| LEVO FEDERAL CREDIT UNION | 46-0225850 | SIOUX FALLS | 1 | 80 | $21.2M |
| AGRONOMY SCIENCES, LLC DBA HEFTY SEED COMPANY | 20-2149647 | BALTIC | 4 | 672 | $21.1M |
| PERSONA SIGNS, LLC | 87-4419557 | WATERTOWN | 2 | 766 | $20.5M |
| RELIABANK DAKOTA | 46-0133683 | ESTELLINE | 1 | 92 | $20.4M |
| PIONEER BANK & TRUST | 46-0108155 | SPEARFISH | 1 | 122 | $20.3M |
| GLACIAL LAKES | 46-0461664 | WATERTOWN | 2 | 383 | $20.1M |
| VISION CARE ASSOCIATES LLP | 46-0363581 | ABERDEEN | 1 | 115 | $19.8M |
| LLOYD COMPANIES, INC. | 83-2634703 | SIOUX FALLS | 2 | 709 | $19.7M |
| BANNER ASSOCIATES, INC. | 83-0184921 | BROOKINGS | 1 | 108 | $19.6M |
| PHYSICIAN'S LABORATORY, LTD | 46-0315398 | SIOUX FALLS | 1 | 45 | $19.5M |
EINs are drawn from the Form 5500 the employer filed with the U.S. Department of Labor. An employer’s EIN is the same across all of its plans — open a filing to confirm the sponsor name and address before relying on it.
How to find an employer’s EIN in South Dakota
Every employer that sponsors a retirement or health plan files a Form 5500 that lists its nine-digit Employer Identification Number. Find a South Dakota company in the table above, or run a Form 5500 search by company name to pull the filing and read the EIN directly from it.
For a broader view of plans in the state — including industry breakdowns and the largest plans by assets — see Form 5500 plans in South Dakota. New to these filings? Start with What is Form 5500?