· Private foundation
The Mill Spring Foundation 084206-000
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 FY2021–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k8 grants · $43k
- $10k–50k10 grants · $160k
- $50k–250k4 grants · $450k
| Recipient | Amount |
|---|---|
| THE WORLD AFFAIRS COUNCIL OF | $200,000 |
| SCIENCE HISTORY INSTITUTE | $100,000 |
| FRANKLIN INSTITUTE | $100,000 |
| WOODMERE ART MUSEUM | $50,000 |
| CONSUMER BANKRUPTCY ASSISTANCE | $25,000 |
| LEADERSHIP INSTITUTE | $25,000 |
| WHITEMARSH FOUNDATION | $25,000 |
| FACE TO FACE | $20,000 |
| WISSAHICKON VALLEY PUBLIC LIBRARY | $15,000 |
| FOUNDATION FOR FREE ENTERPRISE | $10,000 |
| PHILADELPHIA ZOO | $10,000 |
| FAMILY PROMISE MONTCO PA | $10,000 |
| GIRL SCOUTS OF EASTERN PA | $10,000 |
| Individual grant recipient | $10,000 |
| MUSIC WORKS | $7,500 |
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 (FY21–25, $208k) land where the poverty rate runs at 15%, against an area that typically sits at 8%. 58% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-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.
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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +21% since the first grant, against +15% for the ones you funded once.
25 repeat relationships — 18 still active in FY2025, 7 since wound down; 3 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, 82% of grant dollars renewed an existing relationship; $115k 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
- TPTHE PUBLIC SCHOOL OF GERMANTOWN3× · 2021–2024 · $350k · revenue +26%
- TFTHE FRANKLIN INSTITUTE4× · 2021–2025 · $183k · revenue +60%
- FTFACE TO FACE INC4× · 2021–2025 · $115k · revenue +16%
Funded once
- WPWILLIAM PENN CHARTER SCHOOL INCone grant, 2023 · $500k · revenue -24%
- HHHighlands Historical Societyone grant, 2024 · $100k · revenue -94%
- WAWORLD AFFAIRS COUNCIL OF PHILADELPHIAgraduatedone grant, 2021 · $25k · revenue +72%
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.
The philadelphia school educates children for a future that is impossible to know but not impossible to shape. learn here. go anywhere.
Charter school providing students a content rich, adademically rigerous core knowledge education with a well-defined, sequential curriculum in a safe, orderly disiplined and caring environment.
All students learn the academic and personal skills they need to be truly prepared for postsecondary success and able to pursue their dreams.
The grayson school provides gifted children a challenging, research-based education worthy of their intellect and their intrinsic desire to learn and think deeply. we serve as a valued resource for the gifted education community in…
The trustees of the university of pennsylvania (the "university") sees itself as having a public service mission. in such regard, the university aims to provide a rich and diverse educational environment for its students; to pioneer…
The Montessori School educates children from 18 months-6th grade. Our program is rooted in the educational philosophy of Dr. Maria Montessori faithful to her method. In our caring environment, sustained by freedom peace, the school…
To inspire individuals and organizations to create a better future through historical understanding.
Valley day school is a private, non-profit, state-funded, special education school licensed by the pennsylvania department of education for students who are experiencing learning and/or adjustment difficulties.
Founded in 1827, the pennsylvania horticultural society (phs) uses horticulture to advance the health and well-being of the greater philadelphia region. (continued in sch o)phs's work focuses on four impact priorities: creating healthy…
Challenging and nurturing mind, body, and spirit, we inspire boys and girls to lead lives of purpose, faith, and integrity.
Preschool education for 3, 4 and 5 year old children in the kennett square, pennsylvania area
To engage our community in a life more beautiful through the shared experience and transformative impact of chamber music, by arranging diverse and compelling programs by exceptional artists at affordable prices, and by presenting new…
For reference, the grantee most central to the portfolio’s shape is Christs Home and the most unlike its peers is Highlands Historical Society. 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 39 years old; the field is 15. You back the established end — and your money leans older still.
The field is 21% 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 14% 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.
30 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. 30 of the 39 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 WILLIAM PENN CHARTER SCHOOL INC ↗
- Who funds THE PUBLIC SCHOOL OF GERMANTOWN ↗
- Who funds THE FRANKLIN INSTITUTE ↗
- Who funds WOODMERE ART MUSEUM ↗
- Who funds FACE TO FACE INC ↗
- Who funds SCIENCE HISTORY INSTITUTE ↗
- Who funds Highlands Historical Society ↗
- Who funds The Whitemarsh Foundation ↗
- Who funds Leadership Institute ↗
- Who funds CONSUMER BANKRUPTCY ASSISTANCE PROJECT ↗
- Who funds WISSAHICKON VALLEY PUBLIC LIBRARY ↗
- Who funds ZOOLOGICAL SOCIETY OF PHILADELPHIA ↗
- Who funds FAMILY PROMISE MONTCO PA ↗
- Who funds FOUNDATION FOR FREE ENTERPRISE EDUCATION ↗
- Who funds WORLD AFFAIRS COUNCIL OF PHILADELPHIA ↗
- Who funds Gemma Services ↗
- Who funds ROCK TO THE FUTURE INC ↗
- Who funds MUSICWORKS ↗
- Who funds Cradle of Hope Inc ↗
- Who funds HOPE SPRINGS EQUESTRIAN THERAPY INC ↗
- Who funds CHILDREN'S SCHOLARSHIP FUND PHILADELPHIA ↗
- Who funds CHRISTS HOME ↗
- Who funds GIRL SCOUTS OF EASTERN PENNSYLVANIA INC ↗
- Who funds GIRLS ROCK PHILLY ↗
- Who funds BETHESDA PROJECT ↗
- Who funds ENCHANTMENT THEATRE COMPANY ↗
- Who funds Special Equestrians Inc ↗
- Who funds KENCREST SERVICES ↗
- Who funds CCSA FOUNDATION ↗
- Who funds BABY BUREAU ↗
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: The Philadelphia Foundation · Henry Dolfinger 2 Trust Uw · Connelly Foundation · Lindback Cr & Mf Foundation Tw Main · Wsfs Cares Foundation · United Way of Greater Philadelphia and Southern New Jersey · The William Penn Foundation · The Cedarcrest Charitable Foundation Aka Blbb Charitable · The Gordon Charter Foundation · Independence Foundation · W W Smith Charitable Trust · Chubb Charitable Foundation
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 The Mill Spring Foundation 084206-000 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 The Mill Spring Foundation 084206-000?
Find your warmest path to The Mill Spring Foundation 084206-000 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.