Environment nonprofits in Connecticut

441 environmental nonprofits in Connecticut file a Form 990. Together they report $179 million in revenue and hold $1.3 billion in assets.

Browse all 214 environmental nonprofits in Connecticut →

The largest are Ocean Exploration Trust Inc, Inclusive Prosperity Capital Inc, and Northwest Connecticut Land Conservancy Inc.

Environment in Connecticut

Largest by revenue first.

Ocean Exploration Trust Inc 501(c)(3) · New London, CT	$19.3M
Inclusive Prosperity Capital Inc 501(c)(3) · Hartford, CT	$10.8M
Northwest Connecticut Land Conservancy Inc 501(c)(3) · Kent, CT	$9.6M
CChantecaille Family Foundation 501(c)(3) · Greenwich, CT	$8.6M
The Connecticut Audubon Society Incorporated 501(c)(3) · Fairfield, CT	$8.4M
Save The Sound Inc 501(c)(3) · New Haven, CT	$7.9M
Keep America Beautiful Inc 501(c)(3) · Stamford, CT	$7.7M
Earthplace The Nature Discovery Center Inc 501(c)(3) · Westport, CT	$5.2M
Steep Rock Association Inc 501(c)(3) · Washington Dt, CT	$4.6M
CConnecticut Citizen Research Group Inc 501(c)(3) · Hartford, CT	$4.3M
CConnecticut Land Conservation Council Inc 501(c)(3) · Middletown, CT	$3.7M
Ct Energy Efficiency Finance Company 501(c)(3) · Wallingford, CT	$3.6M
Stamford Land Conservation Trust Inc 501(c)(3) · Stamford, CT	$3.3M
Sound Waters Inc 501(c)(3) · Stamford, CT	$3.3M
Sharon Land Trust Inc 501(c)(3) · Sharon, CT	$3.0M
Aspetuck Land Trust Inc 501(c)(3) · Fairfield, CT	$2.8M
Land Trust Of Darien Inc 501(c)(3) · Darien, CT	$2.8M
New Canaan Nature Center Association Inc 501(c)(3) · New Canaan, CT	$2.3M
Environmental Learning Centers Of Connecticut Inc 501(c)(3) · Bristol, CT	$2.3M
Wholesome Wave Inc 501(c)(3) · Bridgeport, CT	$2.1M
Wyndham Land Trust Inc 501(c)(3) · Pomfret Ctr, CT	$2.1M
Flanders Nature Center Inc Van Vleck Farm 501(c)(3) · Woodbury, CT	$1.7M
Housatonic Valley Association Inc 501(c)(3) · Cornwall Bridge, CT	$1.7M
Connecticut Resource Conservation And Development Area Inc 501(c)(3) · Haddam, CT	$1.7M
Conneticut Maritime Foundation Inc 501(c)(3) · Mystic, CT	$1.6M
Climate Change For All Educators Inc 501(c)(3) · New Canaan, CT	$1.5M
Avalonia Land Conservancy Inc 501(c)(3) · Ledyard, CT	$1.4M
Newtown Forest Association Inc 501(c)(3) · Newtown, CT	$1.4M
Denison Pequotsepos Nature Center Inc 501(c)(3) · Mystic, CT	$1.4M
Roxbury Land Trust Inc 501(c)(3) · Roxbury, CT	$1.4M
GGreater Bridgeport Communityenterprises Inc - Gbce 501(c)(3) · Bridgeport, CT	$1.4M
Bartlett Arboretum Association Inc 501(c)(3) · Stamford, CT	$1.3M
New Pond Farm Education Center Inc 501(c)(3) · West Redding, CT	$1.3M
Lyme Land Conservation Trust Inc 501(c)(3) · Old Lyme, CT	$1.2M
Darien Nature Center Inc 501(c)(3) · Darien, CT	$1.2M
Granby Land Trust Inc 501(c)(3) · Granby, CT	$1.0M
White Memorial Conservation Center Inc 501(c)(3) · Litchfield, CT	$1.0M
Renew Northeast Inc 501(c)(6) · Madison, CT	$1.0M
The Greenwich Land Trust Inc 501(c)(3) · Greenwich, CT	$1.0M
The Last Green Valley Inc 501(c)(3) · Danielson, CT	$1.0M
Litchfield Land Trust Inc 501(c)(3) · Litchfield, CT	$999K
East Haddam Land Trust Inc 501(c)(3) · East Haddam, CT	$972K
Reforest The Tropics Inc 501(c)(3) · Mystic, CT	$965K
Essex Land Trust Inc 501(c)(3) · Essex, CT	$911K
Madison Land Conservation Trust Inc 501(c)(3) · Madison, CT	$866K
OOld Stone Mill Foundation Trust 501(c)(3) · Colchester, CT	$838K
Pratt Nature Center Inc 501(c)(3) · New Milford, CT	$814K
Gather New Haven 501(c)(3) · New Haven, CT	$801K
Woodcock Nature Center Inc 501(c)(3) · Wilton, CT	$772K
North Central Conservation District Inc 501(c)(3) · Vernon, CT	$676K
Norfolk Land Trust Inc 501(c)(3) · Norfolk, CT	$664K
Farmington River Watershed Association Inc 501(c)(3) · Simsbury, CT	$646K
Joshuas Tract Conservation & Historic Trust 501(c)(3) · Mansfield Ctr, CT	$644K
Westport Womans Club Inc 501(c)(3) · Westport, CT	$640K
Efficiency For All Inc 501(c)(3) · Windsor, CT	$625K
Holcomb Farm Inc 501(c)(3) · West Granby, CT	$619K
Northwest Conservation District Inc 501(c)(3) · Torrington, CT	$598K
Friends Of The Norwalk River Valley Trail Inc 501(c)(3) · Georgetown, CT	$583K
Southwest Conservation District Inc 501(c)(3) · Hamden, CT	$582K
Hartford Land Bank Inc 501(c)(3) · Hartford, CT	$557K
Redding Land Trust Incorporated 501(c)(3) · Redding, CT	$546K
North American Marine Environment Protection Association Inc 501(c)(3) · Weston, CT	$537K
Norwalk Tree Alliance Inc 501(c)(3) · Norwalk, CT	$531K
Greenwich Botanical Center Inc 501(c)(3) · Cos Cob, CT	$499K
Farmington Land Trust Inc 501(c)(3) · Unionville, CT	$499K
Middlebury Land Trust Inc 501(c)(3) · Middlebury, CT	$498K
Waveny Park Conservancy Inc 501(c)(3) · New Canaan, CT	$476K
Branford Land Trust Inc 501(c)(3) · Branford, CT	$471K
Lake Waramaug Task Force Inc 501(c)(3) · Warren, CT	$463K
Connecticut Roundtable On Climate And Jobs 501(c)(3) · Clinton, CT	$454K
Mclean Game Refuge Inc 501(c)(3) · Simsbury, CT	$428K
Live Green Connecticut Inc 501(c)(3) · Fairfield, CT	$416K
Wilton Land Conservation Trust 501(c)(3) · Wilton, CT	$403K
Winchester Land Trust Inc 501(c)(3) · Winchester Center, CT	$375K
Havens Harvest Inc 501(c)(3) · New Haven, CT	$351K
Kent Land Trust Inc 501(c)(3) · Kent, CT	$336K
Greenwich Tree Conservancy Inc 501(c)(3) · Greenwich, CT	$333K
Connecticut River Coastal Conservation District Inc 501(c)(3) · Middletown, CT	$332K
Collective Oyster Recycling & Restoration Foundation 501(c)(3) · Fairfield, CT	$332K
CConnecticut Tree Protective Association Inc 501(c)(3) · Wallingford, CT	$323K
Pomperaug River Watershed Coalition Inc 501(c)(3) · Woodbury, CT	$315K
Oseas Conservation Foundation 501(c)(3) · Ridgefield, CT	$311K
CConnecticut Wind Collaborative Inc 501(c)(3) · Groton, CT	$305K
MMorse Wilson Family Foundation 501(c)(3) · Trumbull, CT	$304K
SSasco Creek Neighbors Environmental Trust Inc 501(c)(3) · Southport, CT	$304K
Global 2050 Inc 501(c)(3) · Old Lyme, CT	$303K
Northern Connecticut Land Trust Inc 501(c)(3) · Somers, CT	$282K
Guilford Land Conservation Trust Inc 501(c)(3) · Guilford, CT	$279K
Federated Garden Clubs Of Connecticut Inc 501(c)(3) · Wallingford, CT	$274K
Bridgewater Land Trust Inc 501(c)(3) · Bridgewater, CT	$263K
New Canaan Beautification League Inc 501(c)(3) · New Canaan, CT	$260K
Aton Forest Inc Paul Lagel 501(c)(3) · Norfolk, CT	$255K
Salem Land Trust Inc 501(c)(3) · Salem, CT	$253K
Huneebee Project Inc 501(c)(3) · New Haven, CT	$246K
Bethany Land Trust Incorporated 501(c)(3) · Bethany, CT	$246K
Community Voice Channel 501(c)(3) · Bolton, CT	$224K
Middlesex Land Trust 501(c)(3) · Middletown, CT	$218K
Simsbury Land Trust Inc 501(c)(3) · Simsbury, CT	$218K
Colebrook Land Conservancy Inc 501(c)(3) · Colebrook, CT	$217K
Warren Land Trust Inc 501(c)(3) · Warren, CT	$212K

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