Environment (C600) Nonprofits

NTEE Code C600 — Browse environment (c600) nonprofits with AI-powered transparency reports, revenue analysis, and executive compensation data from IRS 990 filings.

Category Overview

50Organizations
$146.5MTotal Revenue
$0Total Assets
$2.9MAvg Revenue
15States

Top Environment (C600) Organizations by Revenue

# Organization State Revenue
1 National Outdoor Leadership School WY $46.8M
2 Surfrider Foundation CA $15.7M
3 The Trust For Hidden Villa CA $11.0M
4 Resource Central CO $7.6M
5 Sonoma Ecology Center CA $5.9M
6 North Cascades Institute WA $5.7M
7 Heal The Bay CA $4.9M
8 Colorado Outward Bound School CO $3.9M
9 New Pond Farm Education Center Inc CT $3.6M
10 Pollinator Partnership CA $3.5M
11 Leave No Trace Center For Outdoor Ethics CO $2.9M
12 Colorado Mountain Club CO $2.7M
13 Bluff Lake Nature Center CO $2.5M
14 Re Sources WA $2.4M
15 River Bend Nature Works TX $2.1M
16 Enviromental Learning Center Inc FL $2.0M
17 Housatonic Valley Association Inc CT $1.8M
18 Center For Alaskan Coastal Studies AK $1.8M
19 Southwestern Environmental Education Exchange AZ $1.7M
20 Denison Pequotsepos Nature Center Inc CT $1.6M

Geographic Distribution

State Organizations Combined Revenue Share
Oregon 8 $4.6M 3.1%
Colorado 6 $20.4M 13.9%
Connecticut 6 $9.7M 6.6%
California 5 $41.0M 28.0%
Arizona 5 $3.9M 2.7%
Montana 3 $899K 0.6%
Alaska 2 $3.1M 2.1%
Washington 2 $8.1M 5.6%
New Mexico 2 $281K 0.2%
Wyoming 2 $46.9M 32.0%
Alabama 2 $1.1M 0.7%
Hawaii 1 $918K 0.6%
Texas 1 $2.1M 1.4%
Louisiana 1 $658K 0.4%
Florida 1 $2.0M 1.3%

All Environment (C600) Organizations (50)

Frequently Asked Questions

What is NTEE code C600?

NTEE code C600 classifies nonprofits in the environment category. The National Taxonomy of Exempt Entities (NTEE) is a classification system used by the IRS and researchers to categorize tax-exempt organizations by their primary purpose and activities. This falls under the broader Environment sector.

How many environment (c600) nonprofits are there?

There are 50 environment (c600) nonprofits tracked on NonprofitSpending, with a combined revenue of $146.5M and total assets of $0. Organizations are spread across 15+ states, with Oregon having the most (8).

Which is the largest environment (c600) nonprofit?

National Outdoor Leadership School is the largest environment (c600) nonprofit by revenue, with $46.8M in annual revenue. It is based in Wyoming.

What is the average revenue for environment (c600) nonprofits?

The average revenue among 50 tracked environment (c600) nonprofits is $2.9M. Revenue data comes from IRS 990 electronic filings.

Where does the data for environment (c600) nonprofits come from?

All nonprofit data is sourced from IRS 990 electronic filings via the ProPublica Nonprofit Explorer API. Organizations are required to file annual returns (Form 990) with the IRS, which are public records. NonprofitSpending enriches this data with AI-generated transparency analysis.

How are NTEE categories assigned?

NTEE (National Taxonomy of Exempt Entities) codes are assigned by the IRS based on an organization's primary tax-exempt purpose. The system uses letter codes for broad categories (A = Arts, B = Education, etc.) and numeric subcodes for specific activities. Organizations may request reclassification if their primary purpose changes.

About NTEE Code C600: Environment

The National Taxonomy of Exempt Entities (NTEE) is a classification system developed by the National Center for Charitable Statistics. It categorizes tax-exempt organizations recognized by the IRS into groups based on their primary exempt purpose.

NTEE code C600 covers organizations focused on environment. This category falls within the broader Environment sector, which includes environmental conservation, pollution control, and wildlife organizations.

Data for these organizations comes from IRS Form 990, which tax-exempt organizations must file annually. Form 990 includes information about revenue, expenses, assets, executive compensation, program activities, and governance.

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