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William B Dietrich Foundation at a glance

· Private foundation

William B Dietrich Foundation

Its FY2024 filing reports that it accepted unsolicited grant applications.

$3.2M
Granted FY2024still arriving
10
Grants FY2024still arriving
1
States reached
$1.2M
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0197% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Arts & Culture$12MEducation$4.2MMembership Benefit$1.2MEnvironment$1.1MReligion$975kScience & Tech$800kRecreation & Sports$450kPhilanthropy$431kOther$0
02FY2024 · 10 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • $10k–50k2 grants · $20k
  • $50k–250k2 grants · $295k
  • $250k+6 grants · $2.9M
$270,000
Median grant
1
States reached
$73M
Total assets
Largest grants
RecipientAmount
FRIENDS OF LAUREL HILL & WEST LAUREL HILL CEMETERIES$1,160,000
THE FRANKLIN INSTITUTE$500,000
MORRIS ARBORETUM OF THE UNIVERSITY OF PENNSYLVANIA$340,000
PHILADELPHIA SOCIETY FOR THE PRESERVATION OF LANDMARKS$330,000
WILLIAMSON COLLEGE OF THE TRADES$270,000
TOWNSHIP OF LOWER MERION$255,000
US SQUASH RACQUETS ASSOCIATION INC$240,000
SAINT MARK'S CHURCH$54,700
NEW HORIZONS SENIOR CENTER$10,000
SURREY SERVICES FOR SENIORS$10,000
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Its human-services grants (FY17–24, $80k) land where the poverty rate runs at 6%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 10%SURREY SERVICES FOR SENIORS: $10k → 6%SURREY SERVICES FOR SENIORS: $10k → 6%SURREY SERVICES FOR SENIORS: $10k → 6%SURREY SERVICES FOR SENIORS: $10k → 6%SURREY SERVICES FOR SENIORS: $10k → 6%SURREY SERVICES FOR SENIORS: $10k → 6%SURREY SERVICES FOR SENIORS: $10k → 6%SURREY SERVICES FOR SENIORS: $10k → 6%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
04

Where the work is directed

The same grants placed two ways: where each recipient sits, and where its stated purpose sends the money.

About 8% of William B Dietrich Foundation’s grant dollars are earmarked for a different county than the recipient’s own address. By recipient address, 98% of the giving stays in PA; by stated purpose, 86%.

William B Dietrich Foundationlessmore of its giving
Placed by recipient address · 8.3% directed abroad (not shown)
How this is measured
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the funder’s own 990 grant descriptions.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

60%of every dollar goes to organizations it has funded before.
$12M · 19 repeat orgs$8.3M to everyone else

Grantees it renews have grown median revenue +10% since the first grant, against 0% for those funded once.

19 repeat relationships: 4 still active in FY2024, 15 since wound down; 5 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

19
18

Total granted

$12M
$5.8M

Median revenue growth · since first grant

+10%
0%

Still filing today

68%
50%

New vs renewed · share of each year

In FY2024, 12% of grant dollars renewed an existing relationship; $2.5M went to new ones.

50%100%’17’18’19’20’21’22’23’24
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’18’19’20’21’22’23’24
Arts & CultureEducationScience & TechEnvironmentHuman ServicesPhilanthropyOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • PM
    PHILADELPHIA MUSEUM OF ART
    4× · 2017–2020 · $1.6M · revenue +14%
  • DU
    DREXEL UNIVERSITY
    3× · 2017–2020 · $1.3M · revenue +10%
  • SC
    SPRINGSIDE CHESTNUT HILL ACADEMY
    3× · 2018–2022 · $500k · revenue +34%

Funded once

  • TA
    THE ATHENAEUM OF PHILADELPHIA
    one grant, 2021 · $1.3M · revenue 0% · 49% of their budget
  • CI
    CURTIS INSTITUTE OF MUSIC
    one grant, 2022 · $745k · revenue -28%
  • WV
    WEST VINCENT TOWNSHIP
    one grant, 2021 · $686k
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
The Phillips Collection

The phillips collection is the oldest museum of modern and contemporary art in the u.s. in addition to presentation of works from the permanent collection and special exhibitions, the museum maintains active educational, academic,…

Arts & Culture
2
The Pierpont Morgan Library

The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.

Education
3
Institute for Advanced Study - Louis Bamberger & Mrs Felix Fuld Foundation

The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.

Science & Tech
4
American Museum of Natural History

The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

Arts & Culture
5
Dickinson College

Dickinson college provides a useful, innovative and interdisciplinary education in the liberal arts and sciences to prepare students to lead rich and fulfilling lives of engaged global citizenship

Education
6
The Trustees of Princeton University

Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…

Education
7
Pennsylvania Academy of the Fine Arts

The academy operates a post-secondary educational program in fine arts as well as a gallery collection of american art. in addition, the academy sponsors fine arts classes for all ages and free arts programs.

Education
8
Henry E Huntington Library and Art Gallery

The huntington library, art museum, and botanical gardens shares its world-renowned collections to support scholarship, foster learning, inspire creativity, and offer transformative experiences for diverse audiences.

Arts & Culture
9
Albright College

As a diverse community of learners, we cultivate integrity, curiosity, connection and resilience.

Education
10
The Newark Museum Association

Nmoa mission statement is: we welcome everyone with inclusive experiences that spark curiosity and foster community.

Arts & Culture
11
Bard College

Bard college seeks to provide a challenging academic program and a supportive environment that fosters a collaborative interchange of ideas in the classroom as well as ambition to achieve excellence.

Education
12
Baltimore Museum of Art

The baltimore museum of art connects art to baltimore and baltimore to the world, embodying a commitment to artistic excellence and social equity in every decision from art presentation, interpretation, and collecting, to the composition…

Arts & Culture
How this is measured
The grantee most central to the portfolio’s shape is Historical Society of Pennsylvania; the most unlike its peers is Drexel University. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
05the grantee network

27 grantees tracked through their own filings, 2017–2025.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 27 of the 44 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

3
Load-bearing (≥25% of a budget)
5
Early backer (in before they grew)
27/27
Grantees still filing
15/27
Grew since first funded

Where the money sits, by cause and then by grantee

UNIVERSITY OF PENNSYLVANIA MUSEUM OF ARCHAEOLOGY AND ANTHROPOLOGY: $1,620,000 · OtherUNIVERSITY OF PENNSYLVANIA MUSEUM OF ARCHAEOLOGY AND…Historical Society of Pennsylvania: $1,295,000 · OtherHistorical Society of PennsylvaniaFRIENDS OF LAUREL HILL AND WEST LAUREL HILL CEMETERIES: $1,160,000 · OtherFRIENDS OF LAUREL HILL AND WEST LAUREL HILL CEMETERI…THE ACADEMY OF MUSIC: $1,112,000 · OtherTHE ACADEMY OF MUSICFREE LIBRARY OF PHILADELPHIA FOUNDATION: $1,000,000 · OtherFREE LIBRARY OF PHILADELPHIA FOUNDATIONSAINT MARK'S CHURCH: $820,181 · OtherSAINT MARK'S CHURCHWEST VINCENT TOWNSHIP: $685,600 · OtherWEST VINCENT TOWNSHIPGERMANTOWN FRIENDS SCHOOL: $450,000 · OtherIndividual grant recipient: $422,000 · Other+11 more: $1,507,000 · Other+11 moreTHE ATHENAEUM OF PHILADELPHIA: $1,312,500 · EducationTHE ATHENAEUM OF PHILADELPHI…DREXEL UNIVERSITY: $1,300,000 · EducationDREXEL UNIVERSITYTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $700,000 · EducationTRUSTEES OF THE UNIVERSITY O…THE UNIVERSITY OF THE ARTS: $625,428 · EducationTHE UNIVERSITY OF THE ARTSWILLIAMSON COLLEGE OF THE TRADES: $595,000 · EducationWILLIAMSON COLLEGE OF THE TR…SPRINGSIDE CHESTNUT HILL ACADEMY: $500,000 · EducationSPRINGSIDE CHESTNUT HILL ACA…GIRARD COLLEGE FOUNDATION: $325,000 · EducationGIRARD COLLEGE FOUNDATION+1 more: $50,000 · EducationPHILADELPHIA MUSEUM OF ART: $1,600,000 · Arts & CulturePHILADELPHIA MUSEUM OF ARTTHE BARNES FOUNDATION: $1,000,000 · Arts & CultureTHE BARNES FOUNDATIONCURTIS INSTITUTE OF MUSIC: $745,000 · Arts & CultureCURTIS INSTITUTE OF MUSICTHE FRANKLIN INSTITUTE: $500,000 · Arts & CultureTHE FRANKLIN INSTITUTEWOODMERE ART MUSEUM: $475,000 · Arts & CultureWOODMERE ART MUSEUMBRINTON ASSOCIATION OF AMERICA INC: $340,000 · Arts & CultureBRINTON ASSOCIATION OF AMER…PHILA SOCIETY FOR THE PRESERVATION OF LANDMARKS: $330,000 · Arts & CulturePHILA SOCIETY FOR THE PRESE…FUND FOR THE ENDOWMENT OF THE DIPLOMATIC RECEPTION ROOMS OF THE DEPT OF STATE: $175,073 · Arts & Culture+3 more: $74,600 · Arts & CultureVANGUARD CHARITABLE ENDOWMENT PROGRAM: $310,000 · PhilanthropyWOOD NAOMI UW: $121,000 · PhilanthropyTHE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA: $300,000 · Science & TechFAIRMOUNT PARK CONSERVANCY: $210,000 · EnvironmentSURREY SERVICES FOR SENIORS INC: $80,000 · Human Services
Other$10,071,781Education$5,407,928Arts & Culture$5,239,673Philanthropy$431,000Science & Tech$300,000Environment$210,000Human Services$80,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetPHILADELPHIA MUSEUM OF ART: $1,600,000 over 4y, 0.7% of budgetTHE ATHENAEUM OF PHILADELPHIA: $1,312,500 over 1y, 49% of budgetDREXEL UNIVERSITY: $1,300,000 over 3y, 0.1% of budgetHistorical Society of Pennsylvania: $1,295,000 over 2y, 15% of budgetFRIENDS OF LAUREL HILL AND WEST LAUREL HILL CEMETERIES: $1,160,000 over 1y, 44% of budgetFREE LIBRARY OF PHILADELPHIA FOUNDATION: $1,000,000 over 3y, 1.7% of budgetTHE BARNES FOUNDATION: $1,000,000 over 5y, 0.9% of budgetCURTIS INSTITUTE OF MUSIC: $745,000 over 1y, 1.1% of budgetTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $700,000 over 2y, 0.0% of budgetTHE UNIVERSITY OF THE ARTS: $625,428 over 1y, 0.5% of budgetWILLIAMSON COLLEGE OF THE TRADES: $595,000 over 3y, 1.2% of budgetTHE FRANKLIN INSTITUTE: $500,000 over 1y, 1.0% of budgetSPRINGSIDE CHESTNUT HILL ACADEMY: $500,000 over 3y, 0.4% of budgetWOODMERE ART MUSEUM: $475,000 over 2y, 3.3% of budgetBRINTON ASSOCIATION OF AMERICA INC: $340,000 over 1y, 82% of budgetPHILA SOCIETY FOR THE PRESERVATION OF LANDMARKS: $330,000 over 1y, 11% of budgetGIRARD COLLEGE FOUNDATION: $325,000 over 1y, 21% of budgetVANGUARD CHARITABLE ENDOWMENT PROGRAM: $310,000 over 2y, 0.0% of budgetTHE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA: $300,000 over 1y, 1.4% of budgetFAIRMOUNT PARK CONSERVANCY: $210,000 over 2y, 2.8% of budgetFUND FOR THE ENDOWMENT OF THE DIPLOMATIC RECEPTION ROOMS OF THE DEPT OF STATE: $175,073 over 2y, 21% of budgetSURREY SERVICES FOR SENIORS INC: $80,000 over 8y, 0.3% of budgetTHREEFOLD EDUCATION ASSOCIATION INC: $50,000 over 1y, 19% of budgetPERFORMANCE GARAGE INC: $44,600 over 2y, 7.7% of budgetPHILADELPHIA CLEF CLUB FOR JAZZ & PERFORMING ARTS INC: $15,000 over 1y, 1.8% of budgetCOUNTY THEATER INC: $15,000 over 1y, 1.2% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

The William Penn Foun…The Philadelphia Foun…Hamilton Family Found…The Philadelphia Cult…Lindback Cr & Mf Foun…Henry Dolfinger 2 Tru…Chubb Charitable Foun…Connelly FoundationHoward J Sedran Famil…The 1830 Family Found…United Way of Greater…Vanguard Charitable E…
The William Penn FoundationPA25.4× affinity10 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The William Penn Foundation · The Philadelphia Foundation · Hamilton Family Foundation · The Philadelphia Cultural Fund Inc · Lindback Cr & Mf Foundation Tw Main · Henry Dolfinger 2 Trust Uw · Chubb Charitable Foundation · Connelly Foundation · Howard J Sedran Family Foundation · The 1830 Family Foundation 2138-00-42 · United Way of Greater Philadelphia and Southern New Jersey · Vanguard Charitable Endowment Program

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization William B Dietrich Foundation funds: left to right is the share of its income from government, bottom to top the share from William B Dietrich Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%3%13%28%50%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    11report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    typical government reliance, FY20–25
    How this is measured
    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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.
    05Through Plinth

    Warm introductions · Powered by PlinthPlus

    How do I get to William B Dietrich Foundation?

    Find your warmest path to William B Dietrich 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.

    On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 44 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

    How this is measured
    Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

    Generated from the IRS Form 990-PF e-file return for fiscal year 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

    Source object · view filing

    Play a game based on William B Dietrich’s filings →

    More from the funding graph

    The unnamed billions
    grants reported with no recipient in the public record
    The regranting layer
    51% of grant dollars land in the regranting layer
    The DAF merry-go-round
    $9.7B circulates between donor-advised funds
    The endowment market
    who holds foundation money, and what just moved
    The camps
    funders cluster by geography, not ideology
    By state
    where grant money is based, and what stays home