Nonprofits in South Dakota
7,469 organizations in the IRS master file with a South Dakota address, listed A to Z by name.
Public IRS records only
This list comes from the IRS master file, which anyone can download from irs.gov. Nothing on it comes from Fast File Exempt accounts or filings. We run this lookup; it isn’t an IRS service. About this data
All organizations, page 1 of 150
IRS master file dated October 13, 2026; loaded here on October 26, 2026.
0–9
- 100 HORSES WOMENS SOCIETY INC100 HORSES WOMENS SOCIETYEIN 88-1125207DUPREE501(c)(3)
- 1917 FOUNDATIONEIN 39-2739426BRANDON501(c)(3)
- 1ST SIGNAL BRIGADE ASSOCIATION INCEIN 20-1411711ABERDEEN501(c)(3)
- 28 CES BOOSTER CLUBEIN 83-4348007ELLSWORTH AFB501(c)(3)
- 28 CONS BOOSTER CLUBEIN 99-2493419ELLSWORTH AFB501(c)(3)
- 28 MUNITIONS BOOSTER CLUBEIN 99-3141023ELLSWORTH AFB501(c)(3)
- 29-90 SPORTSMANS CLUBEIN 91-1823803SIOUX FALLS501(c)(3)
- 2G CHARITABLE FOUNDATIONEIN 36-4414115SIOUX FALLS501(c)(3)
- 39TH NATIONAL NARROW GAUGE CONVENTIONEIN 38-4033408PIEDMONT501(c)(3)
- 3CSEIN 41-3501428BRITTON501(c)(3)
- 4-H CLUBS & AFFILIATED 4-H ORGANIZATIONSHUMBOLDT SHARP SHOOTERSEIN 46-0463250HARTFORD501(c)(3)
- 4-H SHOOTING SPORTSEIN 93-2659514BRITTON501(c)(3)
- 4 THE KIDS SDEIN 82-4727673WATERTOWN501(c)(3)
- 4-MOONS RISING RENDEZVOUSEIN 45-4252642MANSFIELD501(c)(7)
- 4030 FOUNDATIONEIN 81-4103788YANKTON501(c)(3)
- THE 437 PROJECTEIN 41-4902764SIOUX FALLS501(c)(3)
- 4J FOUNDATIONEIN 85-1257175ABERDEEN501(c)(3)
- 5678 ALL STARS BOOSTER CLUB INCEIN 41-4627699MCCOOK LAKE501(c)(3)
- 605 BOXER RESCUE INCEIN 84-2390827SIOUX FALLS501(c)(3)
- 605 COMMUNITY IMPACT FOUNDATIONEIN 42-2749794HOWARD501(c)(3)
- 605 DIRT DIVAS SOFTBALL ASSOCIATIONEIN 39-4602243SIOUX FALLS501(c)(3)
- 605 LOCAL LEADSEIN 99-2550239TEA501(c)(6)
- 7 RIVERS REVITALIZATION GROUPEIN 46-5318434RAPID CITY501(c)(3)
- 7TH CIRCUIT COURT APPOINTED SPECIAL ADVOCATE PROGRAMKAHALA TWO BULLS EXEC DIREIN 46-0402202RAPID CITY501(c)(3)
A
- A & B WINSTROM CHRISTIAN FAMILY FOUNDATIONEIN 26-1403052SIOUX FALLS501(c)(3)
- A BRIDGE BETWEEN USEIN 93-4426054SCENIC501(c)(3)
- A CENTER FOR TRAINING AND RESTORATION INCEIN 20-4129747RAPID CITY501(c)(3)
- A COE & DOROTHY FRANKHAUSER TRUST UW 08-21-95 31-4111-00-6EIN 46-6098625SIOUX FALLS
- A CURE FOR CORAEIN 99-3307934SIOUX FALLS501(c)(3)
- A H BROWN LIBRARY FOUNDATION INCEIN 46-0457889MOBRIDGE501(c)(3)
- A HAND 2 HOLD INCEIN 99-3136043SIOUX FALLS501(c)(3)
- A HEART FOR THE KINGDOM INCEIN 80-0139537BELLE FOURCHE501(c)(3)
- A HEART FOR THE PARKSEIN 41-2937777HILL CITY501(c)(3)
- A MAN AND HIS BONESEIN 99-4961467SIOUX FALLS501(c)(3)
- A PLACE FOR MEOW RESCUEEIN 88-1881063RAPID CITY501(c)(3)
- A PLUS PAYEE SERVICESEIN 74-3095270RAPID CITY501(c)(3)
- A R WOOD EDUCATIONAL TRUSTEIN 41-6023357SIOUX FALLS501(c)(3)
- A THREE STRAND CORDEIN 88-4092985SPEARFISH501(c)(3)
- A VOICE FOR CHILDREN AND FAMILIESEIN 77-0715455SIOUX FALLS501(c)(3)
- AANENSON FAMILY FOUNDATIONEIN 93-2880360SIOUX FALLS501(c)(3)
- ABATE OF SIOUX FALLS INCEIN 46-0380996SIOUX FALLS501(c)(4)
- ABATE OF SOUTH DAKOTAEIN 46-0384002SIOUX FALLS501(c)(4)
- ABATE OF SOUTH DAKOTA FOUNDATIONEIN 11-3839569SIOUX FALLS501(c)(3)
- ABBEY OF THE HILLS INN AND RETREAT CENTEREIN 46-4176934MARVIN501(c)(3)
- ABBOT GILBERT HESS COUNCIL NO 1720 KNIGHTS OF COLUMBUSEIN 23-7545863MILBANK501(c)(8)
- ABBOTT HOUSE INCEIN 46-0229822MITCHELL501(c)(3)
- ABBOTT HOUSE FOUNDATIONEIN 46-0379896MITCHELL501(c)(3)
- ABC OF THE DAKOTAS9992EIN 46-0413495SIOUX FALLS501(c)(3)
- ABERDEEN ALLIANCE CHURCH OF THE CHRISTIAN AND MISSIONARY ALLIANCEABERDEEN ALLIANCE CHURCHEIN 46-0316053ABERDEEN501(c)(3)
- ABERDEEN AMATEUR HOCKEY ASSOCIATIONEIN 23-7194708ABERDEEN501(c)(3)
Guides
- Form 990-N, 990-EZ or 990: which to fileThe three tests, what "normally $50,000" means, who must file Form 990 regardless, and who doesn't file at all.
- Form 990 for PTAs, PTOs and booster clubsWhether a unit under a state group exemption files its own return, which form, the July–June deadline, and the treasurer handover.
- Private foundation filing requirementsForm 990-PF, its deadline and extension, and the separate returns a foundation may owe.
- Who can file Form 990-NThe "normally $50,000 or less" test, what the e-Postcard asks for, and when it's due.
- Form 990-N filing problemsEIN not in IRS records, IRS sign-in, filing too early, late and prior-year notices, and checking a past filing.
- Form 990 filing deadlinesThe general due date for each tax-year end, and how weekends and holidays move it.
- Form 8868 extensionsWhen Form 8868 extends an annual return, and why tax is still due on the original date.
- Late filing penaltiesThe daily penalty for a late return, reasonable cause, and the three-year revocation rule.