1. Directory of nonprofits
  2. Categories
  3. Environmental organizations
  4. Environmental societies

Environmental professional societies

There are 1,480 environmental societies in the United States. Combined, these environmental societies employ 2,388 people, earn more than $352 million in revenue each year, and have assets of $817 million.
Skip to:
Related directory pages:

Job trends for Environmental societies

Employees per organizationNumber of organizations
0
 
201
1-10
 
88
11-25
 
23
26-100
 
14
101 to 1,000
 
6
1,000+
 
0
Key takeaways for employment stats:

Sizes of environmental societies

Revenues per organizationNumber of organizations
< $250k
 
423
$250k to $1M
 
95
$1M to $5M
 
57
$5M to $25M
 
13
$25M to $100M
 
1
$100M+
 
0
Key takeaways for revenue stats:

Directory of environmental societies

Want to add filters to this list, or drill down on results in detail? Open in the Cause IQ search interface
1-20 of 1,480

Pennsylvania Horticultural Society (PHS)

The Pennsylvania Horticultural Society is a nonprofit membership organization founded in 1827 that provides great events, activities and publications for novice gardeners, experienced horticulturists, and flower lovers of all ages.
Revenue
$40.9m
Assets
$74.4m
Employees
213
EIN
23-1352265
IRS type
501(c)(3)

CREO Family Office Syndicate

CREO mobilizes private capital for sustainable solutions & offers expert educational platform for transformative investors to achieve measurable environmental impact.
Revenue
$7.6m
Assets
$5.9m
Employees
27
EIN
81-0960214
IRS type
501(c)(3)

Garden Club of America (GCA)

Founded in 1913, The Garden Club of America is a volunteer nonprofit organization comprised of 200 member clubs and approximately 18,000 club members throughout the country.
Revenue
$7.4m
Assets
$65.7m
Employees
13
EIN
13-1626773
IRS type
501(c)(3)

Horticultural Society of New York (HSNY)

The mission of the Horticultural Society of New York (The Hort) is to sustain the vital connection between people and plants.
Revenue
$14.1m
Assets
$13.1m
Employees
166
EIN
13-0854930
IRS type
501(c)(3)

Society of American Foresters

Society of American Foresters advances sustainable forestry through science, education, and leadership while supporting professionals in achieving excellence in forest management.
Revenue
$6.4m
Assets
$27.3m
Employees
41
EIN
53-0204630
IRS type
501(c)(3)

Water Quality Association

The Water Quality Association is a non-profit organization dedicated to promoting education, statistical data, interchange of ideas and the promotion of water treatment products for members. It also offers laboratory services and independent testing ...
Revenue
$15.7m
Assets
$15.1m
Employees
85
EIN
36-2784319
IRS type
501(c)(6)

Association for the Advancement of Sustainability in Higher Education (AASHE)

AASHE promotes sustainability in higher education through education, communication, research and professional development to inspire a thriving world.
Revenue
$2.2m
Assets
$1.1m
Employees
15
EIN
22-3319874
IRS type
501(c)(3)

California Green Building Council

Los Angeles chapter of the US Green Building Council. Promoting sustainable practices through increased action, education, and engagement. Expanding regional initiatives and innovative startups.
Revenue
$3.6m
Assets
$1.9m
Employees
33
EIN
75-3041444
IRS type
501(c)(3)

Society for Conservation Biology

Society for Conservation Biology advances biodiversity conservation science and practice, uniting a diverse global community, publishing leading journals, and convening major conservation conferences.
Revenue
$3.8m
Assets
$3.7m
Employees
11
EIN
33-0147824
IRS type
501(c)(3)

Smokies Life

Supporting preservation of Great Smoky Mountains National Park through education, interpretation, research, sales, labor, donations and volunteers.
Revenue
$8.8m
Assets
$14.2m
Employees
133
EIN
62-0576032
IRS type
501(c)(3)

Zion National Park Forever Project

Zion NP Forever engages in collaborative conservation efforts to protect the park's cultural and natural resources, including rare and endangered species.
Revenue
$10.5m
Assets
$17.9m
Employees
83
EIN
87-0256961
IRS type
501(c)(3)

SETAC North America

Environmental toxicology and chemistry research society promoting multidisciplinary approaches to examine environmental impacts of stressors, chemicals and technology.
Revenue
$2.0m
Assets
$2.1m
Employees
18
EIN
37-1482800
IRS type
501(c)(3)

New England Botanic Garden at Tower Hill

The Society exists as an educational organization to inspire the use and appreciation of horticulture to improve lives, enrich communities, and strengthen commitment to the natural world.
Revenue
$8.7m
Assets
$59.4m
Employees
123
EIN
04-1988945
IRS type
501(c)(3)

American Horticulture Industry Association

A trade organization in Columbus, OH that advocates for and advances the horticulture industry through collaboration, education, and research.
Revenue
$7.5m
Assets
$16.3m
Employees
22
EIN
46-4411915
IRS type
501(c)(6)

Alaska Geographic Association

Alaska Geographic Association creates educational materials and experiential programs for a public that cares for Alaska's land.
Revenue
$6.2m
Assets
$9.2m
Employees
65
EIN
92-0043154
IRS type
501(c)(3)

National Association of State Foresters

National Association of State Foresters promotes cooperation and develops programs to advance forest stewardship. Brings together officials from 50 states.
Revenue
$7.0m
Assets
$4.7m
Employees
12
EIN
51-0141374
IRS type
501(c)(5)

Association of Energy Engineers

The Association of Energy Engineers mission is to promote scientific and educational interests of those engaged in the Energy industry through certification programs, membership services, and conferences.
Revenue
$11.4m
Assets
$19.3m
Employees
34
EIN
58-1306354
IRS type
501(c)(6)

American Horticultural Society

American Horticultural Society promotes gardening and environmental stewardship through educational programs and maintenance of its 25-acre headquarters in Alexandria, VA.
Revenue
$3.4m
Assets
$13.9m
Employees
24
EIN
53-0226408
IRS type
501(c)(3)

Gulf Coast Power Association

Gulf Coast Power Association is an environmental professional society in Austin, TX whose mission is: Gulf Coast Power Association promotes business through education, conferences and scholarships.
Revenue
$2.7m
Assets
$3.2m
Employees
4
EIN
76-0243519
IRS type
501(c)(6)

National Association for Environmental Management (NAEM)

NAEM is a professional association that provides peer-led educational programming and an active network where corporate decision-makers can discuss solutions to today's EHS and sustainability management challenges.
Revenue
$2.2m
Assets
$524.4k
Employees
9
EIN
52-1686323
IRS type
501(c)(6)
Want more insights on environmental societies?
There's a whole lot more to Cause IQ than what you see here. Additional filters, personnel information, peer benchmarking, Salesforce integration, vendor lists, etc. Access all the information your company needs in one place, already collected.
Schedule a demo
Over 200 customers use Cause IQ to grow, maintain, and serve their nonprofit clients.
Methodology: Cause IQ mines all tax-exempt organizations that file a Form 990, Form 990-EZ, or Form 990-PF with the IRS. We collect and aggregate this information from OCR'd paper taxreturns, XML e-file taxreturns, IRS-provided extract, the Business Master File, and Cause IQ secret sauce for data cleaning, categorization, classification, analytics, etc.
This category corresponds to the "C03: Environment Professional Societies and Associations" National Taxonomy of Exempt Entities (NTEE) code. Cause IQ determines NTEEs for organizations by its own internally-developed secret-sauce algorithms.
Cause IQ is a website that helps companies grow, maintain, and serve their nonprofit clients, and helps nonprofits find additional foundation funding. Our data and tools help professionals prospect for nonprofits, research opportunities, benchmark their clients, and enrich existing information.
Nonprofits
Product
Customers
About

© 2026 Nonprofit Metrics LLC
Terms of Service and Privacy Policy