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California · NTEE C

Environment Nonprofits in California

Givalgo Discover indexes 50 active environment nonprofits headquartered in California. The list below is sorted by reported revenue on the most recent Form 990 indexed for each organisation.

Top 50 by reported revenue

From the most recent Form 990 indexed for each organisation. Click an org for full diligence detail.

#OrganisationRevenue
1CENTER FOR SUSTAINABLE ENERGY
EIN 33-0936366
$335.6M
2TRUST FOR PUBLIC LAND
EIN 23-7222333
$301.2M
3CLIMATE IMPERATIVE FOUNDATION
EIN 84-5024713
$271.7M
4EARTHJUSTICE
EIN 94-1730465
$170.8M
5SIERRA CLUB FOUNDATION
EIN 94-6069890
$108.2M
6SOCIAL AND ENVIRONMENTAL ENTREPRENEURS INC
EIN 95-4116679
$94.6M
7RESOURCES LEGACY FUND
EIN 95-4703838
$79.6M
8SAVE THE REDWOODS LEAGUE
EIN 94-0843915
$68.1M
9MULTIPLIER
EIN 91-2166435
$65.8M
10PENINSULA OPEN SPACE TRUST
EIN 94-2392007
$62.3M
11REDWOOD FOREST FOUNDATION INC
EIN 68-0404767
$53.6M
12GOLDEN GATE NATIONAL PARKS CONSERVANCY
EIN 94-2781708
$50.7M
13KLAMATH RIVER RENEWAL CORPORATION
EIN 81-2761910
$49.8M
14CATALYST4 INC
EIN 87-3323607
$48.5M
15THE LIVING DESERT
EIN 95-3385354
$48.0M
16GRID ALTERNATIVES
EIN 26-0043353
$46.9M
17GRID ALTERNATIVES
EIN 81-4042787
$46.0M
18LAND TRUST OF SANTA CRUZ COUNTY
EIN 94-2431856
$43.9M
19CARBON MAPPER INC
EIN 85-3149996
$42.0M
20EARTH ISLAND INSTITUTE INC
EIN 94-2889684
$41.6M
21RIVER PARTNERS
EIN 94-3302335
$41.2M
22NAPA COUNTY LAND TRUST
EIN 94-2315096
$39.7M
23CLIMATE LEAD INC
EIN 88-4336644
$37.5M
24ACTIVATE GLOBAL INC
EIN 47-5502184
$30.6M
25PLACER LAND TRUST
EIN 68-0223143
$30.1M
26CALIFORNIA WATERFOWL ASSOCIATION
EIN 94-1149574
$29.6M
27SONOMA LAND TRUST
EIN 51-0197006
$26.9M
28ENERGY ACTION FUND
EIN 26-3390444
$24.4M
29BAY AREA ENVIRONMENTAL RESEARCH INSTITUTE
EIN 94-3176058
$22.6M
30CLIMATE POLICY INITIATIVE INC
EIN 26-4129153
$22.5M
31NATUREBRIDGE
EIN 94-2145930
$22.3M
32WATER FOUNDATION
EIN 37-1833985
$22.3M
33GUIDED DISCOVERIES INC
EIN 95-3285562
$22.1M
34ECOLOGY ACTION OF SANTA CRUZ
EIN 94-2584236
$22.1M
35ENERGY COALITION
EIN 20-0943616
$20.1M
36SAN FRANCISCO ESTUARY INSTITUTE
EIN 94-2951373
$19.6M
37GILROY GARDENS FAMILY THEME PARK
EIN 31-1574450
$19.6M
38ECOLOGY CENTER
EIN 94-1703351
$18.1M
39TREEPEOPLE INC
EIN 23-7314838
$18.0M
40BIG SUR LAND TRUST
EIN 94-2473415
$17.8M
41TRI-CITY ECONOMIC DEVELOPMENT CORPORATION
EIN 94-2687078
$17.6M
42DESCANSO GARDENS FOUNDATION
EIN 95-2511202
$16.9M
43APPAREL IMPACT INSTITUTE
EIN 45-5146805
$16.8M
44BUILDING DECARBONIZATION COALITION
EIN 85-4008764
$15.0M
45COOL EFFECT INC
EIN 47-5068496
$14.6M
46SURFRIDER FOUNDATION
EIN 95-3941826
$14.5M
47WILDLANDS CONSERVANCY
EIN 33-0676450
$13.8M
48URBAN TILTH
EIN 20-4124161
$13.8M
49NATURE AND CULTURE INTERNATIONAL
EIN 33-0773524
$13.5M
50SJCOG INC
EIN 68-0453810
$13.4M

Frequently asked questions about environment nonprofits in California

Answers compiled from the IRS Form 990, BMF, Pub 78, and Auto-Revocation List.

How many environment nonprofits operate in California?
Every IRS-registered environment nonprofit in California appears in the Givalgo Discover index. The top 50 by reported revenue are listed on this page; the full set is searchable on discover.givalgo.ai.
What's the largest environment nonprofit in California?
The single largest environment nonprofit in California by reported total revenue is shown at the top of the list on this page, sourced from each organisation's most recent IRS Form 990 filing.
How do I vet a environment nonprofit in California before donating?
Use Givalgo Discover's free profile for the organisation: it cross-references the IRS Auto-Revocation List, IRS Publication 78, and the IRS Business Master File, and exposes the latest Form 990 financials and governance signals on a single page.
Are donations to California environment nonprofits tax-deductible?
Federal deductibility is determined by IRS Publication 78 status, not state location. Donations to a Pub 78-listed environment nonprofit in California are tax-deductible at the federal level; California state tax treatment may differ.
Where do environment nonprofits in California file their Form 990?
All US tax-exempt organisations file Form 990 with the IRS at the federal level — there is no state-specific filing for the federal exemption itself. California state charity registration is a separate state-level requirement.