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Leonard & Beryl Buck Foundation

The leonard and beryl buck foundation is a charitable trust that was established in 1979 to distribute funds for non-profit charitable, religious or educational activities in marin county, california.

$28M
Granted FY2025(still arriving)
57
Itemized grants FY2025
99
Organizations funded FY2024
8%
First-time grantees FY2024
Read the full brief
Itemized, FY2025
$27M
The rest is grants the schedule does not break out
Median grant, FY2025
$200,000
Largest grant, FY2025
$7,675,008
Organizations funded a year
95 to 125
FY2018 to FY2024
States reached, FY2025
1
Total assets, FY2025
$1.1B

How open it is to new grantees

In FY2024, 8% of the organizations Leonard & Beryl Buck Foundation funded were first-time grantees, receiving 15% of its grant dollars.

New vs renewed · share of each year

In FY2024, 85% of grant dollars renewed an existing relationship; $3.8M went to new ones.

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

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

’18’19’20’21’22’23’24
EducationHuman ServicesHealthArts & CultureHousing & ShelterEnvironmentOther
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.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving37$24M30%
FY202499$25M8%
FY2023101$40M10%
FY202295$27M9%
FY202198$27M7%
FY2020125$26M25%
FY2019107$22M17%
FY2018121$22M29%
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Education$54MPhilanthropy$46MHousing & Shelter$42MHealth$40MHuman Services$39MCommunity Improvement$11MCrime & Legal$11MEnvironment$10MOther$0

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Buck Institute for Research on Aging$21,045,847317%
10000 Degrees$15,120,000821%
Marin Child Care Council$14,750,500827%
Canal Alliance$11,792,258927%
Marin County Office of Education$11,432,9579n/a
Homeward Bound of Marin$8,977,000912%
Center for Volunteer & Nonprofit Leadership$5,951,450926%
Fii - National$5,669,50046%
Habitat for Humanity Greater San Francisco$5,289,278817%
Novato Unified School District$5,258,7528n/a
Show all 243 grantees
All grantees of Leonard & Beryl Buck Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Buck Institute for Research on Aging$21,045,847317%
10000 Degrees$15,120,000821%
Marin Child Care Council$14,750,500827%
Canal Alliance$11,792,258927%
Marin County Office of Education$11,432,9579n/a
Homeward Bound of Marin$8,977,000912%
Center for Volunteer & Nonprofit Leadership$5,951,450926%
Fii - National$5,669,50046%
Habitat for Humanity Greater San Francisco$5,289,278817%
Novato Unified School District$5,258,7528n/a
San Rafael High School District$4,981,4758n/a
San Francisco Food Bank$4,600,37282%
County of Marin$4,341,2513n/a
Alcohol Justice$4,209,169384%
Eden Housing Inc$3,975,00053%
Vivalon$3,958,000813%
The Multicultural Center of Marin$3,597,773932%
Ritter Center$3,565,250811%
Legal Aid of Marin$3,469,333940%
Community Land Trust Association of West Marin$3,139,000851%
Marin Community Clinic$2,913,78782%
Buck Institute for Education$2,806,11336%
North Marin Community Services$2,700,06697%
California State Coastal Conservancy$2,700,0003n/a
Resources for Community Development$2,600,000312%
Marin Horizon School Inc$2,525,00083%
Bolinas Community Land Trust$2,372,500447%
Community Action Marin$2,350,06683%
Marin City Health and Wellness Center$2,263,37587%
Marin Agricultural Land Trust$2,000,000115%
Episcopal Community Services of San Francisco$2,000,00013%
Center for Domestic Peace$1,871,54087%
Marin Clean Energy$1,822,0005n/a
Parent Services Project$1,800,000857%
Bridge Housing Corporation$1,750,00021%
Adopt a Family of Marin$1,744,150835%
St Vincent de Paul Society District Council of Marin County$1,724,40085%
Shoreline Unified School District$1,649,6428n/a
San Geronimo Valley Community Center$1,631,524824%
Midpen Housing Corporation$1,600,00013%
West Marin Community Services$1,519,600833%
West Marin Senior Services$1,495,000819%
Family & Children's Law Center$1,297,015952%
Marin City Community Development Corporation$1,269,250820%
North Bay Childrens Center Inc$1,250,00028%
Sausalito Marin City School District$1,186,9337n/a
Conservation Corps North Bay Inc$1,178,13184%
Marin Shakespeare Company$1,026,000818%
Bay Area Discovery Museum$1,000,000110%
Huckleberry Youth Programs Inc$1,000,00082%
Marin General Hospital Foundation$1,000,000111%
Fairfax-San Anselmo Childrens Center$1,000,000123%
Aliados Health$954,63884%
Bay Area Community Resources Inc$930,18881%
Marin Center for Indenpendent Living$905,100811%
Petaluma Health Center Inc$816,87551%
Marin Wildfire Prevention Authority$816,0001n/a
Innovative Health Solutions$801,000629%
Next Generation Scholars Inc$801,000818%
Parent Institute for Quality Education Inc$740,00082%
Marin Performing Stars$722,000725%
YWCA of San Francisco & Marin$712,961529%
Marin Interfaith Council Inc$700,2508n/a
Extrafood$689,33676%
Buckelew Programs$662,75023%
Agricultural Institute of Marin$615,00063%
Coastal Health Alliance$600,22234%
Lifehouse Inc$565,15032%
Grid Alternatives$565,0001n/a
Marin Promise Partnership$560,00057%
Marin Community College District Kentfield$550,0007n/a
Housing Authority of the County of Marin$541,2004n/a
Multiplier$532,00071%
The West Marin Fund$519,00049%
Youth Leadership Institute$502,12882%
County of Marin$500,8005n/a
Marin Foster Care Association$500,000133%
Inquiring Systems Inc$474,84024%
Greenbelt Alliancepeople for Open Space$450,0001n/a
The Redwoods a Community of Seniors$450,00012%
Fair Housing Advocates of Northern California$447,00088%
Enriching Lives Through Music$441,000819%
Young Men's Christian Association of San Francisco$436,00060%
YWCA Golden Gate Silicon Valley$427,80031%
Hannah Project Partnership for Academic Achievement$415,500628%
Marin Link Inc$413,66286%
Marin Theatre Company$401,50083%
Bridge the Gap College Prep$400,00084%
Dreamorg$387,40023%
New Beginnings Law Center$383,000677%
Marin City Community Services District$378,0006n/a
Catalyst Impact Fund Inc$363,750112%
Northern California Grantmakers$350,00062%
The Marin Museum Society Inc$342,500847%
Youth in Arts$326,000811%
The Spahr Center$324,00022%
Green & Healthy Homes Initiative Inc$321,00022%
City of San Rafael$319,8794n/a
EAH Inc$304,00050%
The Cedars of Marin$300,25031%
The Ceres Community Project$297,60082%
Young Imaginations$296,000898%
Front Porch Communities Foundation$293,80032%
Covia Communities$274,92050%
Social Justice Collaborative$268,00021%
Ambulatory Surgery Access Coalition$257,00084%
Call Marin Home$250,000138%
Carbon Cycle Institute$250,000136%
College of Marin Foundation$250,00024%
Enterprise Community Partners Inc$250,00020%
Commonweal$235,00031%
California Poets in the Schools$223,520813%
Fire Safe Marin Inc$218,0001n/a
The Novato Human Needs Center$210,000140%
Side By Side$206,73931%
Lilypad Homes$205,850182%
Physicians for Social Responsibility - San Francisco Bay Area Chapter$203,382268%
Bambini Yoga Project$200,5002n/a
Mission Asset Fund$200,00014%
Non-Profit Housing Association of Northern California$200,0001n/a
Urban Association of Forestry and Fire Professionals Inc$200,00024%
Rotacare Bay Area Inc$192,50083%
Performing Arts Workshop Inc$180,39582%
Marin City First Missionary Baptist Church Inc$177,0006n/a
Immigrant Legal Resource Center$176,92540%
Lifelong Medical Care$170,00040%
The Center for Effective Philanthropy Inc$163,50041%
OneJustice$160,96833%
Grantmakers Concerned With Immigrants and Refugees$160,00061%
Cool the Earth Inc$160,000224%
The Education Trust Inc$155,00070%
Big Brothers Big Sisters of the North Bay Inc$150,000119%
Play Marin$150,000126%
Children Now$150,00051%
National Audubon Society Inc$150,00010%
Surviving the Odds Project$145,0003n/a
Two Valleys Community Land Trust$140,000316%
Literacyworks$130,000315%
California Film Institute$125,00021%
Marin City Climate Resilience$124,618112%
McCt$122,50026%
Redwood High School$115,0506n/a
Turning Green$106,087110%
Campaign for College Opportunity$105,00071%
National College Attainment Network$105,00071%
California Budget & Policy Center$105,00071%
Marin Court Appointed Special Advocates$100,500411%
California Calls Education Fund$100,00011%
Abode Housing Development$100,0001n/a
Golden State Opportunity$100,00021%
Early Vibes Inc$100,000533%
The Marine Mammal Center$100,00011%
Economic Security Project Inc$100,00011%
The Marin Aging & Disability Institute LLC$100,000218%
Prader-Willi Homes of California$100,000132%
Marin Symphony Association$100,00051%
Sutter Bay Hospitals$100,00010%
Coastal Quest$95,0001n/a
Dance Palace$93,50037%
California Academy of Sciences$92,00020%
Gracepointe Faith Church Inc$83,3004n/a
Marin Children & Families Commission$75,0002n/a
Audubon Canyon Ranch Inc$75,00011%
Papermill Creek Childrens Corner$71,50033%
National Urban Fellows Inc$70,00017%
Marin County Bicycle Coalition$67,00015%
Presbyterian Church USA$65,0002n/a
Naturebridge$63,05610%
Dominican University of California$60,00030%
Casa Allegra Community Services$56,00011%
Community Initiatives$55,00020%
Senior Access$55,0001n/a
Gallery Route One$50,00057%
Sausalito Foundation$50,000161%
Bernard Osher Marin Jewish Community Center$50,00010%
Golden Gate National Parks Conservancy$50,00010%
Planned Parenthood Shasta-Diablo Inc$50,00010%
Slide Ranch$50,00013%
In Spirit$50,000130%
Catholic Legal Immigration Network Inc$47,00030%
Beyond Hunger Inc$43,6732n/a
Marin Advocates for Children$40,638117%
Bolinas-Stinson Beach School Foundation$40,000113%
Marin Museum of Contemporary Art$37,44052%
E3 Education Excellence & Equity$35,50018%
Bay Area Organizing Committee$34,50027%
Bay Area Legal Aid$31,51310%
Marin Brain Injury Network Schurig Center for Brain Injury Recovery$30,00015%
Marinartsorg$30,000245%
Trips for Kids Marin$30,00013%
Aim High for High School$30,00011%
Chronicle Season of Sharing Fund$27,00010%
West Coast Arts Foundation$25,520132%
Outdoor Afro$25,00014%
Summer Search$25,00010%
North Bay Organizing Project$25,0001n/a
Zero Breast Cancer$22,32023%
Church of God in Christ Inc$20,0002n/a
Ross Valley Children For Change$20,0001n/a
Bolinas Community Inc$20,000111%
Catholic Charities Cyo of the Archdiocese of San Francisco$15,27510%
Health Leads Inc$15,00010%
Awhs Falcon Foundation$10,75022%
Community Energy Services Corporation$10,00020%
The Center for Investigative Reporting Inc$10,00010%
DrawBridge$10,00015%
Peoples Inter Cities Fellowship$10,0001n/a
American Society on Aging$10,00020%
Marin Economic Forum$10,0001n/a
San Francisco Estuary Institute$9,20010%
Inside Circle Foundation of California Public Benefit Coropoation$8,1812n/a
Zen Center a Corporation Sole$5,4502n/a
Marin Academy$5,00010%
Strategic Energy Innovations$5,00010%
City of Sausalito$5,0001n/a
Trout Unlimited$5,0001n/a
Unity in Marin$4,5084n/a
Marin American Indian Alliance$4,0502n/a
Mark Day School$4,00040%
Congregation Rodef Sholom of Marin$4,0001n/a
Venetia Valley School Foundation$4,0001n/a
Jessica's Haven and Rescue$3,19433%
Center for Wellness and Achievement$3,02820%
Sleepy Hollow Presbyterian Church$3,0001n/a
Marin County Library Foundation$2,00011%
School of Environmental Leadership$1,05010%
Veterans Path Inc$1,02510%
Giants Community Fund$1,00010%
Prison University Project Inc Dba Mount Tamalpais College$98020%
Greenwood School$85030%
Matrix A Parent Network and Resource Center$83830%
Sharing Merits Inc$5881n/a
San Rafael High School Boosters Inc$4001n/a
Yes The Ross Valley Schools Foundation$37510%
Big Brothers Big Sisters of the Bay Area$35010%
Davidson Middle School PTO$32710%
Can Do Education Foundation Formerly Dixie Childrens Fund$30010%
PTA California Congress of Parents Teachers & Students Inc$3001n/a
Saveabunny$30010%
O'Hanlon Center for the Arts Inc$25010%
Golden Gate Labrador Retriever Rescue Inc$10010%
Mountain Play Association$10010%
Marin Humane Society$5010%

Where it is load-bearing

Leonard & Beryl Buck Foundation supplied at least a quarter of the budget for 32 of its grantees at some point. The chart plots its 196 largest grantees; load-bearing ones sit top left.

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetBuck Institute for Research on Aging: $21,045,847 over 3y, 17% of budget10000 Degrees: $15,120,000 over 8y, 21% of budgetMarin Child Care Council: $14,750,500 over 8y, 27% of budgetCanal Alliance: $11,792,258 over 9y, 27% of budgetHomeward Bound of Marin: $8,977,000 over 9y, 12% of budgetCenter for Volunteer & Nonprofit Leadership: $5,951,450 over 9y, 26% of budgetFii - National: $5,669,500 over 4y, 6.0% of budgetHabitat for Humanity Greater San Francisco: $5,289,278 over 8y, 17% of budgetSan Francisco Food Bank: $4,600,372 over 8y, 1.6% of budgetAlcohol Justice: $4,209,169 over 3y, 84% of budgetEden Housing Inc: $3,975,000 over 5y, 2.8% of budgetVivalon: $3,958,000 over 8y, 13% of budgetThe Multicultural Center of Marin: $3,597,773 over 9y, 32% of budgetRitter Center: $3,565,250 over 8y, 11% of budgetLegal Aid of Marin: $3,469,333 over 9y, 40% of budgetCommunity Land Trust Association of West Marin: $3,139,000 over 8y, 51% of budgetMarin Community Clinic: $2,913,787 over 8y, 1.8% of budgetBuck Institute for Education: $2,806,113 over 3y, 5.7% of budgetNorth Marin Community Services: $2,700,066 over 9y, 7.4% of budgetResources for Community Development: $2,600,000 over 3y, 12% of budgetMarin Horizon School Inc: $2,525,000 over 8y, 3.4% of budgetBolinas Community Land Trust: $2,372,500 over 4y, 47% of budgetCommunity Action Marin: $2,350,066 over 8y, 2.6% of budgetMarin City Health and Wellness Center: $2,263,375 over 8y, 7.2% of budgetMarin Agricultural Land Trust: $2,000,000 over 1y, 15% of budgetEpiscopal Community Services of San Francisco: $2,000,000 over 1y, 3.3% of budgetCenter for Domestic Peace: $1,871,540 over 8y, 6.9% of budgetParent Services Project: $1,800,000 over 8y, 57% of budgetBridge Housing Corporation: $1,750,000 over 2y, 1.3% of budgetAdopt a Family of Marin: $1,744,150 over 8y, 35% of budgetSt Vincent de Paul Society District Council of Marin County: $1,724,400 over 8y, 5.5% of budgetSan Geronimo Valley Community Center: $1,631,524 over 8y, 24% of budgetMidpen Housing Corporation: $1,600,000 over 1y, 2.9% of budgetWest Marin Community Services: $1,519,600 over 8y, 33% of budgetWest Marin Senior Services: $1,495,000 over 8y, 19% of budgetFamily & Children's Law Center: $1,297,015 over 9y, 52% of budgetMarin City Community Development Corporation: $1,269,250 over 8y, 20% of budgetNorth Bay Childrens Center Inc: $1,250,000 over 2y, 8.3% of budgetConservation Corps North Bay Inc: $1,178,131 over 8y, 3.7% of budgetMarin Shakespeare Company: $1,026,000 over 8y, 18% of budgetBay Area Discovery Museum: $1,000,000 over 1y, 10% of budgetHuckleberry Youth Programs Inc: $1,000,000 over 8y, 2.1% of budgetMarin General Hospital Foundation: $1,000,000 over 1y, 11% of budgetFairfax-San Anselmo Childrens Center: $1,000,000 over 1y, 23% of budgetAliados Health: $954,638 over 8y, 3.7% of budgetBay Area Community Resources Inc: $930,188 over 8y, 0.7% of budgetMarin Center for Indenpendent Living: $905,100 over 8y, 11% of budgetPetaluma Health Center Inc: $816,875 over 5y, 0.6% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 196.

Nonprofits that may fit its grantmaking

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.

Marin Community FoundationCA138.1× affinity135 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Marin Community Foundation · The San Francisco Foundation · McNabb Foundation · Bothin Foundation · Hobsonlucas Family Foundation · Extrafood · Peter E Haas Jr Family Fund · The West Marin Fund · Jewish Community Federation of San Francisco the Peninsula Marin & Sonoma · Kaiser Foundation Hospitals · Tipping Point Community · United Way of the Bay Area

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.

Compare Leonard & Beryl Buck Foundation with peer funders

About Leonard & Beryl Buck Foundation

How much does Leonard & Beryl Buck Foundation give?
Leonard & Beryl Buck Foundation reported 57 itemized grants totaling $27,136,144, out of $27,710,613 in total grant expense reported on the return in its FY2025 IRS filing. It funded between 95 and 125 organizations a year over FY2018 to FY2024.
What does Leonard & Beryl Buck Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Education (19%), Philanthropy (16%), Housing & Shelter (15%).
Who are Leonard & Beryl Buck Foundation's largest grantees?
By total granted over FY2017 to FY2025: Buck Institute for Research on Aging ($21M), 10000 Degrees ($15M), Marin Child Care Council ($15M).
Does Leonard & Beryl Buck Foundation fund new organizations?
In FY2024, 8% of the organizations it funded were first-time grantees.
Which funders back the same organizations as Leonard & Beryl Buck Foundation?
Its strongest co-funders, measured against what their size predicts, include Marin Community Foundation, The San Francisco Foundation, McNabb Foundation.
Where is Leonard & Beryl Buck Foundation based?
Leonard & Beryl Buck Foundation is based in MO.

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 252 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 e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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