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Data / Nonprofits / Missouri / Saint Charles / Environment

Environment nonprofits in Saint Charles, MO: 5 registered with the IRS

5 environment nonprofits are registered with the IRS in Saint Charles, MO, 4 of them 501(c)(3) charities; the 1 that report revenue took in $415,631. The largest by revenue: Great Rivers Habitat Alliance ($415,631).

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Every organization, largest by revenue first

OrganizationTypeSinceRevenueAssetsFiling
Great Rivers Habitat Alliance501(c)(3)2000$415,631$563,1792023-12
Eastern Missouri Climbers Association501(c)(3)2024$0$02025-12
Genesis Nexus501(c)(3)2025
Missouri Floodplain and Stormwatermanagers Association501(c)(6)2006$0$02025-12
The New Town Garden Club Inc501(c)(3)2026$0$02025-12

Other causes in Saint Charles, MO

Every nonprofit in Saint Charles, MO · Environment nonprofits across the state · Nonprofits in every city of the state

Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.