Daily IRS refresh
The pipeline pulls the IRS bulk XML release every 24 hours. Candid and ProPublica refresh periodically.
IRS data refreshed daily · Cited by the Library of Congress
Form 990 Finder: search 45 private foundation IRS filings, free.
Look up any U.S. private foundation by name, EIN, city, or state. Pull total giving, grant counts, median grant size, trustees, and asset base from the most recent IRS Form 990 filings. No login. Updated daily.
45
Foundations indexed
2.4M+
Grants parsed
Daily
IRS refresh
Live database
Top foundations by total giving in South Dakota
| Foundation | Based in | Total giving | Grants |
|---|---|---|---|
| Trinity Foundation | Hermosa, SD | $1,700,000 | 2 |
| Persinger Family Foundation | Dakota Dunes, SD | $1,463,603 | 25 |
| Black Hills Animal Ally Foundation | Rapid City, SD | $1,150,000 | 31 |
| The Buettner Family Foundation | Sioux Falls, SD | $947,850 | 321 |
| Single Cause Single Cure | Rapid City, SD | $686,000 | 4 |
| Castlewood Historical Society | Castlewood, SD | $337,727 | 13 |
| The Dorothy Babcock Family Charitable | Dakota Dunes, SD | $313,263 | 93 |
| Ty Eschenbaum Foundation | Sioux Falls, SD | $254,500 | 9 |
| Tennyson Family Foundation Inc | Custer, SD | $231,740 | 253 |
| Yasha Foundation | Dakota Dunes, SD | $227,107 | 30 |
| The Finzen-clark Family Foundation | Dallas, SD | $196,700 | 73 |
| King Ranch Foundation Inc | Box Elder, SD | $196,000 | 96 |
| Schock Foundation | Sioux Falls, SD | $179,240 | 112 |
| Stritecky Family Foundation Inc | Sioux Falls, SD | $162,593 | 59 |
| Charles R Ingerson Family Foundation | Aberdeen, SD | $156,785 | 52 |
Browse by location
Foundations by state in South Dakota
Showing foundation density and concentration in South Dakota, based on IRS filing locations.
Foundation density
Fewer
More
Browse all U.S. states and territories
Alabama (AL)
Alaska (AK)
American Samoa (AS)
Arizona (AZ)
Arkansas (AR)
California (CA)
Colorado (CO)
Connecticut (CT)
Delaware (DE)
District of Columbia (DC)
Florida (FL)
Georgia (GA)
Guam (GU)
Hawaii (HI)
Idaho (ID)
Illinois (IL)
Indiana (IN)
Iowa (IA)
Kansas (KS)
Kentucky (KY)
Louisiana (LA)
Maine (ME)
Maryland (MD)
Massachusetts (MA)
Michigan (MI)
Minnesota (MN)
Mississippi (MS)
Missouri (MO)
Montana (MT)
Nebraska (NE)
Nevada (NV)
New Hampshire (NH)
New Jersey (NJ)
New Mexico (NM)
New York (NY)
North Carolina (NC)
North Dakota (ND)
Northern Mariana Islands (MP)
Ohio (OH)
Oklahoma (OK)
Oregon (OR)
Pennsylvania (PA)
Puerto Rico (PR)
Rhode Island (RI)
South Carolina (SC)
South Dakota (SD)
Tennessee (TN)
Texas (TX)
U.S. Virgin Islands (VI)
Utah (UT)
Vermont (VT)
Virginia (VA)
Washington (WA)
West Virginia (WV)
Wisconsin (WI)
Wyoming (WY)
Browse the database
See 12 more cities
Foundations by category and city in South Dakota
Two common starting points. Category browsing pinpoints funders by program focus. Major U.S. cities concentrate the largest grant dollars.
Browse by top giving categories in South Dakota
| Category | Foundations |
|---|---|
| Education | 18 |
| Health care | 4 |
| Human services | 4 |
| Religion-related | 4 |
| Community improvement | 2 |
| Youth development | 2 |
Browse by major cities in South Dakota
| City | Total giving |
|---|---|
| Sioux Falls, SD | $2.3M |
| Dakota Dunes, SD | $2.0M |
| Rapid City, SD | $1.9M |
| Hermosa, SD | $1.7M |
| Aberdeen, SD | $356.7K |
| Castlewood, SD | $337.7K |
| Custer, SD | $308.1K |
| Dallas, SD | $196.7K |
Why GrantBay
01
02
03
04
Four reasons grantseekers switch to GrantBay
Candid and ProPublica both serve U.S. Form 990 data. GrantBay parses the same IRS source faster, opens the data without a login, and layers analysis on top.
No login, no paywall
Every record is free to search and read. Candid puts the full grant list behind a paid plan.
New Applicant Friendliness score
Proprietary score for every foundation. Tells first-time applicants where they have a realistic chance.
Similar funder matching
Algorithmic matching surfaces 10 to 15 comparable foundations from any profile page. No equivalent on free platforms.
FAQ
Frequently asked questions
Yes. Every record is free to search and free to view. No account is required. Paid plans unlock the grant opportunity database, similar funder matching at scale, and saved searches.
Daily. The pipeline pulls the IRS bulk XML release every 24 hours, parses new and amended filings, and writes updates to the searchable index. Foundations that file electronically appear in the finder within days of submission.
Every record originates from the IRS bulk 990 data release at apps.irs.gov. GrantBay parses the structured XML fields, extracts the itemized grant lists from Part XV of the 990-PF, and layers analysis on top of the raw filing. No data is manually entered.
Type the foundation name or its nine-digit EIN in the search bar. The finder returns the most recent filing year with total giving, grant count, asset base, and a link to the full profile page. Older filings appear on the profile page under the historical filings section.
Part XV, Line 2 of the Form 990-PF carries a single checkbox where the foundation declares whether it only funds preselected grantees or accepts outside applications. GrantBay parses this field from every filing and surfaces it as a filter. About 35 percent of private foundations check the preselected box, which means filtering for Accepts applications eliminates roughly a third of foundations that were never going to fund a cold proposal.
GrantBay updates daily, requires no login, and displays the full itemized grant list on every profile at no cost. The platform runs proprietary analysis layers including the New Applicant Friendliness score and algorithmic similar-funder matching. Both databases pull from the same IRS source data, but the access model and the analytical depth differ.
Yes. Every foundation profile shows the complete itemized grant list from the most recent 990-PF, including recipient name, address, grant amount, and grant purpose. The profile also breaks giving down by recipient state, city, and grant size range.
The 990 Finder concentrates on private foundations and other grantmaking organizations because the 990-PF itemized grant list is the most useful document for grantseekers. The database currently indexes 45 foundation records.
Yes. The Library of Congress nonprofit sector research guide lists GrantBay's Form 990 Finder alongside Candid and ProPublica as a recommended resource for foundation research. Several university libraries reference the GrantBay finder in their funding research guides.