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Indiana · NTEE C
Environment Nonprofits in Indiana
Givalgo Discover indexes 50 active environment nonprofits headquartered in Indiana. 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.
Featured organizations
A representative cross-section beyond the revenue ranking, from national institutions to small community groups and private foundations, chosen for complete, recent IRS filings.
- Aline and Edgar Igleheart Foundation IncEVANSVILLE, IN · $10M–$100M in assets
- Coffee Creek Watershed Conservancy IncCHESTERTON, IN · $1M–$10M in assets
- Wabash River Defenders IncN MANCHESTER, IN · Under $100K revenue
Frequently asked questions about environment nonprofits in Indiana
Answers compiled from the IRS Form 990, BMF, Pub 78, and Auto-Revocation List.
Frequently asked questions about environment nonprofits in Indiana
Answers compiled from the IRS Form 990, BMF, Pub 78, and Auto-Revocation List.
- How many environment nonprofits operate in Indiana?
- Every IRS-registered environment nonprofit in Indiana 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 Indiana?
- The single largest environment nonprofit in Indiana 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 Indiana 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 Indiana 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 Indiana are tax-deductible at the federal level; Indiana state tax treatment may differ.
- Where do environment nonprofits in Indiana 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. Indiana state charity registration is a separate state-level requirement.