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Advocacy· Broad conservation

Sierra Club

“To explore, enjoy, and protect the wild places of the earth.”

Home groundOakland, CA
Founded1892
KindAdvocacy 501(c)(4)
Led byPatrick Murphy

Give to them ↗Every way to help ↓

The origin

How they started

Founded by John Muir in 1892, the Sierra Club is the oldest and largest grassroots environmental organization in the country, with chapters in every state and hundreds of thousands of members. It works the full toolkit at once: organizing volunteers, lobbying Congress, and taking federal agencies to court. On public lands its fights run from defending national monuments and the Roadless Rule to challenging oil and gas leasing across the West.

Every year they sign one sentence and file it with the federal government: “TO EXPLORE, ENJOY, AND PROTECT THE WILD PLACES OF THE EARTH; PRACTICE AND PROMOTE RESPONSIBLE USE OF THE EARTH'S ECOSYSTEMS AND RESOURCES; EDUCATE AND ENLIST HUMANITY TO PROTECT AND RESTORE THE QUALITY OF THE NATURAL AND HUMAN ENVIRONMENT; AND USE ALL LAWFUL MEANS TO CARRY OUT THESE OBJECTIVES.”

Where the money went, FY2025

The work, and what it cost

Bringing people into the fight

$13.7M

SUPPORT AND FUNDING OF 64 VOLUNTEER-LED CHAPTERS AND APPROXIMATELY 446 GROUPS, BUILDING A BROAD-BASED VOLUNTEER MEMBERSHIP THAT HELPS ADVANCE THE ORGANIZATION’S ENVIRONMENTAL ADVOCACY, PUBLIC EDUCATION, AND COMMUNITY ORG...

Read it as they filed it
MEMBERSHIP, CHAPTER AND VOLUNTEER ACTIVITIES: SUPPORT AND FUNDING OF 64 VOLUNTEER-LED CHAPTERS AND APPROXIMATELY 446 GROUPS, BUILDING A BROAD-BASED VOLUNTEER MEMBERSHIP THAT HELPS ADVANCE THE ORGANIZATION'S ENVIRONMENTAL ADVOCACY, PUBLIC EDUCATION, AND COMMUNITY ORGANIZING TO ADVANCE ITS SOCIAL WELFARE MISSION. LOCAL AND STATES ACTIVITIES INCLUDE PUBLIC COMMUNICATION AND EDUCATION ON CLIMATE, ENVIRONMENTAL, AND CONSERVATION ISSUES; RAISING AWARENESS ABOUT CITY, COUNTY, AND STATE POLICIES; MOBILIZING MEMBERS AND SUPPORTERS TO TAKE ACTION ON LOCAL AND STATE ADVOCACY INITIATIVES; AND HOSTING COMMUNITY EVENTS.

IRS Form 990 Part III, fiscal year 2025, signed under penalty of perjury.

Boots on the ground

$9.3M

CALENDAR & OTHER MERCHANDISE, SIERRA (THE ORGANIZATION’S MAGAZINE), COMMUNICATIONS GROUP INCLUDES PRINT AND NON-PRINT MEDIA ACTIVITIES AND DIGITAL STRATEGIES (MISSION IS TO ALIGN THE ONLINE ACTIVITIES AND TECHNOLOGICAL I...

Read it as they filed it
INFORMATION AND EDUCATION: CALENDAR & OTHER MERCHANDISE, SIERRA (THE ORGANIZATION'S MAGAZINE), COMMUNICATIONS GROUP INCLUDES PRINT AND NON-PRINT MEDIA ACTIVITIES AND DIGITAL STRATEGIES (MISSION IS TO ALIGN THE ONLINE ACTIVITIES AND TECHNOLOGICAL INVESTMENTS WITH ITS BROADER GOALS OF ENVIRONMENTAL EDUCATION, ADVOCACY, AND PUBLIC ENGAGEMENT).SIERRA MAGAZINE: PUBLISHED 4 ISSUES PER YEAR WITH AN AVERAGE PRINT RUN IN EXCESS OF 355,000 MAGAZINES, EDUCATING READERS ON ENVIRONMENTAL STEWARDSHIP, RESPONSIBLE USE OF NATURAL RESOURCES, AND OPPORTUNITIES FOR CIVIC ACTION.CALENDAR & OTHER MERCHANDISE: OFFERED SIERRA CLUB BRANDED MERCHANDISE ABOUT NATURE OR THE ENVIRONMENT FOR SALE DIRECTLY TO THE PUBLIC AND OTHER RESELLERS, SUPPORTING THE ORGANIZATION'S EDUCATIONAL AND ADVOCACY PROGRAMS.

IRS Form 990 Part III, fiscal year 2025, signed under penalty of perjury.

Keeping the wild alive

$5.2M

IN 2025, SIERRA CLUB OUTINGS OFFERED IMPACTFUL OUTDOOR EXPERIENCES THAT CONNECTED PEOPLE TO NATURE WHILE ADVANCING ENVIRONMENTAL EDUCATION AND BRINGING MEMBERS TO THE ORGANIZATION’S LARGER CONSERVATION CAMPAIGNS.

Read it as they filed it
OUTDOOR ACTIVITIES:IN 2025, SIERRA CLUB OUTINGS OFFERED IMPACTFUL OUTDOOR EXPERIENCES THAT CONNECTED PEOPLE TO NATURE WHILE ADVANCING ENVIRONMENTAL EDUCATION AND BRINGING MEMBERS TO THE ORGANIZATION'S LARGER CONSERVATION CAMPAIGNS. THROUGH LOCAL CHAPTERS, GROUPS, AND SECTIONS, AS WELL AS THE NATIONAL OUTINGS PROGRAM AND CAMPAIGN-SPECIFIC OUTINGS, TENS OF THOUSANDS OF PARTICIPANTS WERE ENGAGED IN WAYS THAT DEEPENED THEIR UNDERSTANDING OF ENVIRONMENTAL ISSUES. THE INSPIRING CONNECTIONS OUTDOORS (ICO) PROGRAM, FOR EXAMPLE, RAN 226 TRIPS FOR 4,265 YOUTH AND ADULTS - PRIMARILY FROM UNDERSERVED COMMUNITIES - PROVIDING HANDS-ON ENVIRONMENTAL EDUCATION ABOUT ECOSYSTEMS, CONSERVATION ISSUES, AND THE ROLE OF PUBLIC LANDS IN CLIMATE RESILIENCE. THE NATIONAL OUTINGS PROGRAM OFFERED 78 DOMESTIC AND 34 INTERNATIONAL TRIPS TO 1,274 PARTICIPANTS, INTEGRATING LEARNING ABOUT LOCAL FLORA, FAUNA, GEOLOGY, AND CONSERVATION HISTORY, OFTEN INCORPORATING VOLUNTEER WORK LIKE TRAIL RESTORATION TO BUILD AWARENESS OF HOW ENVIRONMENTAL STEWARDSHIP ALIGNS WITH SIERRA CLUB CAMPAIGNS. LOCAL CHAPTERS AND GROUPS ORGANIZED APPROXIMATELY 4,769 OUTINGS WITH 21,000 PARTICIPANTS, RANGING FROM NATURE HIKES TO ADVOCACY TRAINING, EDUCATING PEOPLE ON PRESSING REGIONAL ISSUES LIKE WATER CONSERVATION, HABITAT PROTECTION, AND CLIMATE CHANGE, AND EMPOWERING THEM TO TAKE ACTION. THE MILITARY OUTDOORS PROGRAM, AS PART OF OUTDOORS FOR ALL AND SUPPORTED BY LOCAL OUTINGS, SUPPORTED VETERANS AND ACTIVE MILITARY MEMBERS WITH THERAPEUTIC OUTDOOR EXPERIENCES THAT PROMOTED HEALING, CONSERVATION, AND ADVOCACY. ACROSS ALL PROGRAMS, SIERRA CLUB OUTINGS NOT ONLY CONNECTED MEMBERS TO NATURE BUT ALSO INSTILLED ENVIRONMENTAL VALUES AND A SENSE OF RESPONSIBILITY, REINFORCING THE CLUB'S MISSION TO EXPLORE, ENJOY, AND PROTECT THE PLANET THROUGH DIRECT EDUCATION AND ALIGNMENT WITH SIERRA CLUB'S CONSERVATION GOALS.

IRS Form 990 Part III, fiscal year 2025, signed under penalty of perjury.

Follow the dollar

81 cents of every dollar goes to the work

81¢
81¢ the work14¢ keeping the lights on5¢ finding the next member

That ratio is a good sign, not a scorecard. Plenty of great groups run leaner and lumpier. What matters is the extremes, and Sierra Club is nowhere near one.

$68,613,824 programs, $12,273,763 management, $4,008,229 fundraising. Form 990, FY2025.

The people

Who does the work

0paid staff
10,895volunteers last year
15board members
134years on the ground

Those 10,895 volunteers are people who decided this ground was theirs to defend. If SC is fighting for your place too, the matchmaker will find your way in.

Make it 10,896

The record

The court record

And 53 more in our case database: a selection we track, not their full docket.

12 years of filings

Total revenue by fiscal year, as filed. Point at the line for any year.

$25M$50M$75M$100M$125M$150M$175M$83.8M FY2520132025
Total revenue by fiscal year
YearRevenue
2013$98,154,894
2014$104,369,291
2015$109,178,887
2016$115,963,544
2017$141,369,673
2018$143,677,959
2019$156,717,329
2020$152,278,896
2021$152,093,074
2022$167,540,907
2023$173,425,083
2025$83,752,990

From $98.2M in 2013 to $83.8M in FY25, across 12 public filings.

Fights alongside Center for Biological Diversity (27 shared cases), Natural Resources Defense Council (17 shared cases), Defenders of Wildlife (14 shared cases), Earthjustice (14 shared cases) and Alaska Wilderness League (10 shared cases) and 40 more. Same case, same side, on the federal docket.

The record

On the Hill

Sierra Club files its own federal lobbying reports: 44 filings from 2019 to 2026, naming 263 bills. The filings, at the Senate.

Most filed on energy/nuclear, environment/superfund and natural resources.

Their ground

The places they defend

See every threatened place on one map, and who stands for each.

Where and what
Federal landsU.S. Forest Service · Bureau of Land Management · National Park Service · Fish & Wildlife Service · Bureau of Reclamation
The family, on the record

Sierra Club files 6 related organizations on its return: The Sierra Club Voter Education Fund (527), Sierra Club Independent Action (527), Sierra Club Political Committee (527), Sierra Club Nevada PAC (527), Sierra Club Independent Georgia PAC (527) and Sierra Club Coordinated Georgia PAC (527). A related organization shares people or purpose; it does not share the books.

More groups in California

Ways in

How to help

Stand with Sierra Club

134 years on the ground, 10,895 volunteers, 4 live lawsuits, 81 cents of every dollar on the line. That is who is holding it. There is room for one more.

Sources and methodFinancials, headcounts, and program text: IRS Form 990, FY2025 and 11 prior filings via ProPublica Nonprofit Explorer, EIN 94-1153307. Grantees: Schedule I, same filing. Court record: CourtListener dockets in the MTJP litigation database (11 linked cases: 4 won, 4 active, 3 lost). Related organizations: Schedule R of the same filing, matched to our directory by EIN. Allies: co-litigation edges derived from the same dockets, same case and same side. Lobbying: Senate LDA filings naming SC as client or registrant, read from the MTJP LDA corpus. Place links: MTJP editorial curation with per-link sources. Org-reported figures are always labeled. Data verified as of 2026-09-23. Nothing on this page is pay-to-play.