Humboldt Area Foundation
Bayside, CA ·EIN 23-7310660 ·Grant funding profile from IRS 990 filings
Humboldt Area Foundation also makes grants — see its funder profile →
Who funds Humboldt Area Foundation?
Humboldt Area Foundation is funded by 47 grantmakers, led by The William & Flora Hewlett Foundation ($11.1M), Sergey Brin Family Foundation ($8.6M), The California Endowment ($5.8M). In total, IRS Form 990 filings record $41.1M in grants to Humboldt Area Foundation between 2020–2025.
Showing top 25 of 47 funders by total given.
What grants has Humboldt Area Foundation received?
Individual grants from IRS Form 990 filings, newest first
| Year | Funder | Purpose | Amount |
|---|---|---|---|
| 2025 | Herman & Lenore Rottenberg Foundation | CHARITABLE | $10,000 |
| 2024 | Catalyst4 Inc | FOR THE PURPOSE OF ENVIRONMENTAL PROGRAMS | $2,555,060 |
| 2024 | Sergey Brin Family Foundation | GENERAL OPERATING SUPPORT | $2,457,212 |
| 2024 | John D and Catherine T Macarthur | IN SUPPORT OF THE KLAMATH RIVER FUND | $1,500,000 |
| 2024 | The California Endowment | PROMOTING CLIMATE AND COMMUNITY RESILIENCE VIA LEADERSHIP, HEALTH AND SAFETY: TO SUPPORT EFFORTS TO CREATE THE FIRST CARBON-NEGATIVE RURAL/TRIBAL REGION IN THE US BY 2030 THROUGH ACCELERATING CLIMATE RESILIENCE DEVELOPMENT WHILE CONFRONTING INEQUITABLE HEALTH AND SAFETY IMPACTS OF RAPID TRANSITIONS IN THE REDWOOD COAST, HUMBOLDT, TRINITY AND DEL NORTE REGION. | $1,000,000 |
| 2024 | Rockefeller Philanthropy Advisors Inc | CIVIL RIGHTS, SOCIAL ACTION & ADVOCACY | $425,000 |
| 2024 | The California Endowment | GENERAL OPERATING SUPPORT: TO SUPPORT AN ORGANIZATION DEDICATED TO CREATING A THRIVING, JUST, HEALTHY AND EQUITABLE REGION ACROSS DEL NORTE, HUMBOLDT, AND TRINITY COUNTIES. | $425,000 |
| 2024 | The William & Flora Hewlett Foundation | FOR THE REDWOOD REGION CLIMATE AND COMMUNITY RESILIENCE HUB AND TRIBAL CLIMATE RESILIENCE NETWORK | $250,000 |
| 2024 | Sequoia Park Zoo Foundation | To further the Zoo's mission | $230,162 |
| 2024 | Rsf Social Finance Inc | GENERAL OPERATING SUPPORT | $200,000 |
| 2024 | The Reis Foundation Inc | Project Support | $115,000 |
| 2024 | Humboldt Health Foundation | GENERAL SUPPORT | $100,802 |
| 2024 | S H Cowell Foundation | TO SUSTAIN THE TRIBAL NATIONS CLIMATE RESILIENCE NETWORK. | $100,000 |
| 2024 | The Roundhouse Foundation | KLAMATH RIVER RESTORATION FUND (KRRF) | $100,000 |
| 2024 | Borealis Philanthropy | TO SUPPORT THE WORK OF HUMBOLDT AREA FOUNDATION | $100,000 |
| 2024 | The William & Flora Hewlett Foundation | FOR THE NATIVE CULTURES FUND | $65,000 |
| 2024 | The California Endowment | PROVIDING EMERGENCY RELIEF FOR IMPACTED COMMUNITIES IN HUMBOLDT: TO DEPLOY RESOURCES TO ORGANIZATIONS PROVIDING FOOD, HOUSING, FINANCIAL ASSISTANCE AND SUPPORT FOR RELIEF AND RECOVERY OF MOST VULNERABLE RESIDENTS AND COMMUNITIES IMPACTED BY THE SMITH RIVER WILDFIRE COMPLEX. | $50,000 |
| 2024 | Silicon Valley Community Foundation | Community Development | $45,000 |
| 2024 | The San Francisco Foundation | FOR THE KARUK FOR ECO-CULTURAL REVITALIZATION ENDOWMENT FUND. | $25,000 |
| 2024 | The California Endowment | BRINGING TOGETHER COMMUNITY FOR LEARNING ON HEALTH AND CLIMATE RESILIENCY: TO PROVIDE SUPPORT TO BRING TOGETHER ORGANIZATIONS FROM ACROSS CALIFORNIA WORKING ON CLIMATE RESILIENCY AND EQUITY FOR DEEPER LEARNING, SHARING AND RELATIONSHIP BUILDING. | $20,500 |
| 2024 | Herman & Lenore Rottenberg Foundation | CHARITABLE | $20,000 |
| 2024 | Sergey Brin Family Foundation | GENERAL OPERATING SUPPORT | $17,886 |
| 2024 | The California Wellness Foundation | FOR PROJECT SUPPORT OF THE AA-WOK GEORGIANA TRULL MEMORIAL SCHOLARSHIP WITHIN THE NATIVE CULTURES FUND TO PROVIDE SCHOLARSHIPS TO RECIPIENTS DEDICATED TO THE REVITALIZATION OF THEIR CA INDIGENOUS TRIBAL LANGUAGE TO IMPROVE HEALTH AND WELLNESS. | $15,500 |
| 2024 | Patricia D & William B Smullin | HOLIDAY PARTNERSHIP | $12,440 |
| 2024 | Christine & Jalmer Berg Foundation | TREE PLANTING IN PUBLIC SPACES | $10,200 |
| 2024 | Patricia D & William B Smullin | SUMMER YOUTH PROGRAM | $10,000 |
| 2024 | Patricia D & William B Smullin | OUR SPACE PROGRAM FOR THE HOUSELESS | $9,360 |
| 2024 | Tarbell Family Foundation | Karuk Eco-Cultural Revitalization Fund and Wildland Fire Fund | $8,500 |
| 2024 | Patricia D & William B Smullin | CALIFORNIA CARE FORCE HUMBOLDT CLINIC | $7,400 |
| 2024 | Patricia D & William B Smullin | RCAA TOOTH PROGRAM | $5,500 |
Showing 30 most recent of 200 recorded grants.
Frequently Asked Questions
Who funds Humboldt Area Foundation?
Humboldt Area Foundation is funded by 47 grantmakers, led by The William & Flora Hewlett Foundation ($11.1M), Sergey Brin Family Foundation ($8.6M), The California Endowment ($5.8M). In total, IRS Form 990 filings record $41.1M in grants to Humboldt Area Foundation between 2020–2025.
Who is Humboldt Area Foundation's largest funder?
The William & Flora Hewlett Foundation is the largest recorded funder of Humboldt Area Foundation, with $11.1M across 11 grants (2020–2024).
How much grant funding has Humboldt Area Foundation received?
IRS 990 filings record $41.1M in grants to Humboldt Area Foundation across 200 grants from 47 funders between 2020–2025. Filings are published on a delay, so recent grants may not appear yet.
Looking for funders like Humboldt Area Foundation's?
Grantable's AI matches your organization against 200,000+ grantmakers — including every funder on this page — using their real giving history.
Grant data is drawn from IRS Form 990 filings via Grantable's GrantGraph™. Filings are published on a delay; recent grants may not appear yet.