· Private foundation
Duke Family Foundation
Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2019–2025.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| JIM HILL MIDDLE SCHOOL | $3,000 |
| AMERICAN HEART ASSOCIATION | $1,760 |
| BLACK HILLS QUILTERS GUILD | $1,540 |
| MONUMENT HEALTH FOUNDATION | $1,370 |
| ALS ASSOCIATION | $1,000 |
| PLENTYWOOD HIGH SCHOOL | $700 |
| CALVARY LUTHERAN CHURCH | $400 |
| SOUTH PARK ELEMENTARY SCHOOL | $337 |
| TOYS FOR TOTS | $283 |
| Individual grant recipient | $200 |
| BENCH ELEMENTARY SCHOOL | $179 |
| DAWSON COMMUNITY COLLEGE FOUNDATION | $150 |
| ST JOSEPH'S CATHOLIC CHURCH | $150 |
| LAKE AREA ZOOLOGICAL SOCIETY | $130 |
| ZION LUTHERAN CHURCH | $100 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your human-services grants (FY19–22, $2k) land where the poverty rate runs at 9%, against an area that typically sits at 11%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
20 repeat relationships — 9 still active in FY2025, 11 since wound down; 9 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 69% of grant dollars renewed an existing relationship; $4k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- AHAmerican Heart Association Inc3× · 2021–2025 · $2k · revenue +33%
- MHMonument Health Rapid City Hospital Inc2× · 2024–2025 · $2k · revenue +6%
- ADALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC3× · 2021–2024 · $700 · revenue +13%
Funded once
- LALAKE AREA TECHNICAL COLLEGEone grant, 2021 · $5k
- HHHILARY HOPFAUF MEMORIAL ED SCHOLARone grant, 2024 · $3k
- BHBLACK HILLS ROADTRIP OF HOPEone grant, 2024 · $1k
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
Health care services for the people of western nebraska and eastern wyoming.
Asco association promotes the common business interests of its members by: (1) advocating for policies that improve the quality of cancer care; (2) maintaining the highest standards of oncology medical care through programs supporting…
To be the leading voice of medicine to make minnesota the healthiest state and the best place to practice.
See schedule o:asco is a professional oncology society committed to conquering cancer through research, education, and promotion of the highest quality patient care.
To enhance the health and well-being of the communities we serve.
The mission of st. luke community healthcare is to remain an integral component of the communities of the mission valley through the delivery of personal, compassionate, quality health care in a dignified manner that values our patients,…
The fsmb serves as the voice for state medical boards, supporting them through education, assessment, research and advocacy while providing services and initiatives that promote patient safety, quality health care and regulatory best…
Advance the health of individuals and communities through leadership, advocacy and collaboration on behalf of minnesota hospitals and health systems. vision: minnesotans are healthy and have access to the right care at the right time in…
To support Bozeman Health Services by promoting community participation in and financial support of activities to improve community health and quality of life.
We make a positive difference in the health of the patients and communities we serve.
Sarasota memorial healthcare foundation is the philanthropic partner that helps sarasota memorial health care system bring world-class care to our community.
We deliver a healthcare experience that consistently exceeds patients' expectations through exceptional people - our people are our foundation. we employ trusted, dedicated professionals who serve with compassion, empathy and respect.…
For reference, the grantee most central to the portfolio’s shape is Prairie Lakes Healthcare Foundation and the most unlike its peers is ZooMontana Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 41 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 13% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
22 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 22 of the 77 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds American Heart Association Inc ↗
- Who funds Monument Health Rapid City Hospital Inc ↗
- Who funds Black Hills Quilters Guild ↗
- Who funds BLACK HILLS ROADTRIP OF HOPE ↗
- Who funds CORBETT MEDICAL FOUNDATION ↗
- Who funds AMYOTROPHIC LATERAL SCLEROSIS MN MINNESOTANORTH DAKOTASOUTH DAKOTA ↗
- Who funds CASTLEWOOD COMMUNITY FOUNDATION ↗
- Who funds BIG SKY SENIOR SERVICES INC ↗
- Who funds ALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC ↗
- Who funds LAKE AREA ZOOLOGICAL SOCIETY ↗
- Who funds UND Alumni Association and Foundation ↗
- Who funds GLOBAL BRIGADES INC ↗
- Who funds WEST CANCER FOUNDATION ↗
- Who funds ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
- Who funds SIOUX COUNCIL BOY SCOUTS OF AMERICA INC ↗
- Who funds ZooMontana Inc ↗
- Who funds PRAIRIE LAKES HEALTHCARE FOUNDATION ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: First Interstate BancSystem Foundation Inc · South Dakota Community Foundation · Assurant Foundation · Thrivent Financial for Lutherans · Renaissance Charitable Foundation Inc · Charities Aid Foundation America · The Pfizer Foundation Inc · The Blackbaud Giving Fund · American Online Giving Foundation Inc · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Donor Advised Charitable Giving Inc
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Duke Family Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.
Warm introductions · Powered by PlinthPlus
How do I get to Duke Family Foundation?
Find your warmest path to Duke Family Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.