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Ohio · NTEE C

Environment Nonprofits in Ohio

Givalgo Discover indexes 50 active environment nonprofits headquartered in Ohio. 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
1WESTERN RESERVE LAND CONSERVANCY
EIN 34-1571233
$29.2M
2HOLDEN ARBORETUM TRUST
EIN 34-6919291
$14.4M
3WEST CREEK CONSERVANCY
EIN 34-1859064
$13.9M
4CARDINAL LAND CONSERVANCY INC
EIN 31-1673211
$12.6M
5HOLDEN ARBORETUM
EIN 34-0750346
$11.8M
6INSTITUTE FOR ENERGY ECONOMICS AND FINANCIAL ANALYSIS INC
EIN 45-4244605
$11.5M
7CINCINNATI NATURE CENTER ASSOCIATION
EIN 31-6057978
$10.8M
8APPALACHIA OHIO ALLIANCE
EIN 32-0004421
$7.7M
9CONSERVANCY FOR CUYAHOGA VALLEY NATIONAL PARK
EIN 34-1917257
$6.3M
10CLEVELAND BOTANICAL GARDEN
EIN 34-0239538
$6.3M
11GREAT PARKS FOREVER
EIN 26-1559254
$5.3M
12SOUTHERN OHIO DIVERSIFICATION INITIATIVE
EIN 31-1566951
$5.2M
13INDIAN LAKE ADVOCACY GROUP
EIN 88-3632301
$5.1M
14FRIENDS OF THE CONSERVATORY
EIN 31-1657027
$4.9M
15CAPITAL CROSSROADS SPEC IMPROVEMENT DISTRICT OF COLUMBIA INC
EIN 34-1939884
$4.6M
16BLACK SWAMP CONSERVANCY
EIN 34-1746749
$4.6M
17HAMILTON PARKS CONSERVANCY
EIN 47-2630181
$4.4M
18ENVIRONMENTAL HEALTH WATCH INC
EIN 34-1443935
$4.0M
19OHIO ENVIRONMENTAL COUNCIL
EIN 31-0805578
$3.8M
20JOY OUTDOOR EDUCATION CENTER FOUNDATION INC
EIN 31-0672822
$3.7M
21POWER A CLEAN FUTURE OHIO
EIN 92-1653526
$3.4M
22LITTLE MIAMI CONSERVANCY
EIN 31-0731645
$3.3M
23ATHENS-HOCKING COUNTY RECYCLING CENTERS INC
EIN 31-1227251
$3.1M
24HORTICULTURAL RESEARCH INSTITUTE ENDOWMENT FUND INC
EIN 52-1052547
$3.0M
25CLEVELAND WATER ALLIANCE
EIN 46-1251734
$3.0M
26WILDERNESS CENTER INC
EIN 34-0943581
$2.6M
27SHAKER LAKES REGIONAL NATURE CENTER
EIN 34-6576569
$2.5M
28GLEN HELEN ASSOCIATION
EIN 31-0963193
$2.3M
29UNITED PLANT SAVERS
EIN 03-0345256
$2.3M
30KEEP CINCINNATI BEAUTIFUL INC
EIN 31-0948219
$2.0M
31GREEN UMBRELLA
EIN 31-1770299
$1.8M
32MILL CREEK ALLIANCE
EIN 31-1465290
$1.4M
33WINOUS POINT MARSH CONSERVANCY
EIN 34-1900372
$1.3M
34COLD CREEK FOUNDATION
EIN 83-3766939
$1.2M
35GORMAN HERITAGE FARM FOUNDATION
EIN 80-0078694
$1.2M
36THE OHIO WATER ENVIRONMENT ASSOCIATION
EIN 31-0892817
$1.2M
37OPERATOR TRAINING COMMITTEE OF OHIO INC
EIN 31-6065198
$1.1M
38THREE VALLEY CONSERVATION TRUST
EIN 31-1418241
$1.1M
39BLACK ENVIRONMENTAL LEADERS ASSOCIATION
EIN 85-2819234
$1.1M
40GREATER OHIO POLICY CENTER INC
EIN 26-0784344
$1.1M
41LOGAN THEATER INC
EIN 83-2876176
$954K
42TOUSSAINT RIVER WATERSHED CONSERVANCY
EIN 85-3833243
$932K
43COLUMBIANA COUNTY AGRICULTURAL SOCIETY
EIN 81-4782265
$900K
44ATHENS CONSERVANCY
EIN 32-0035073
$879K
45OHIO STATE PARKS FOUNDATION
EIN 86-2157935
$875K
46FRIENDS OF AULLWOOD INC
EIN 31-0968010
$849K
47KEEP AKRON BEAUTIFUL
EIN 34-1341298
$840K
48TECUMSEH LAND PRESERVATION ASSOCIATION
EIN 31-1313236
$816K
49CIVIC GARDEN CENTER OF GREATER CINCINNATI
EIN 31-0559893
$810K
50BEAVER CREEK WETLANDS ASSOCIATION INC
EIN 31-1241944
$798K

Frequently asked questions about environment nonprofits in Ohio

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

How many environment nonprofits operate in Ohio?
Every IRS-registered environment nonprofit in Ohio 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 Ohio?
The single largest environment nonprofit in Ohio 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 Ohio 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 Ohio 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 Ohio are tax-deductible at the federal level; Ohio state tax treatment may differ.
Where do environment nonprofits in Ohio 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. Ohio state charity registration is a separate state-level requirement.