Organizations
Largest first
By revenue on the last return. Organizations that file Form 990-N report no figures and come last.
| Organization | Return | Revenue |
|---|---|---|
| Conservation Foundation of Lancaster CountyLancaster | Form 990 | $1,764,633FY2024 |
| Audubon Society of Western Pennsylvania IncPittsburgh | Form 990 | $1,742,703FY2025 |
| Green Building AlliancePittsburgh | Form 990 | $1,734,803FY2024 |
| 3 Rivers Wet Weather IncGlenshaw | Form 990 | $1,626,915FY2024 |
| WeconservepaHarrisburg | Form 990 | $1,607,278FY2025 |
| Philadelphia Orchard ProjectPhiladelphia | Form 990 | $1,574,688FY2025 |
| Pocono Environmental Education CenterDingmans Ferry | Form 990 | $1,517,560FY2024 |
| Capital Resource Conservation and Development IncCarlisle | Form 990 | $1,473,384FY2025 |
| Neighborhood Gardens TrustPhiladelphia | Form 990 | $1,436,407FY2025 |
| Jenkins Arboretum & GardensDevon | Form 990 | $1,392,679FY2025 |
| Natural Area AssociationPittsburgh | Form 990 | $1,367,766FY2025 |
| French Creek Valley ConservancyMeadville | Form 990 | $1,318,810FY2024 |
| Pennsylvania Solar CenterPittsburgh | Form 990 | $1,246,916FY2025 |
| Awbury Arboretum Association IncPhiladelphia | Form 990 | $1,236,425FY2024 |
| Land Conservancy of Adams CountyGettysburg | Form 990 | $1,234,441FY2025 |
| Pa Cleanways of Allegheny County IncEtna | Form 990 | $1,232,300FY2025 |
| Glen Foerd Conservation CorpPhiladelphia | Form 990 | $1,192,623FY2024 |
| Tookany-Tacony-Frankford Watershed PartnershipPhiladelphia | Form 990 | $1,174,352FY2025 |
| Bowmans Hill Wildflower Preserve Association IncNew Hope | Form 990 | $1,170,787FY2024 |
| Pa CleanwaysGreensburg | Form 990 | $1,156,218FY2025 |
| Pocono Heritage Land Trust IncEast Stroudsburg | Form 990 | $1,153,463FY2025 |
| Lacawac Sanctuary Foundation IncLake Ariel | Form 990 | $1,136,204FY2025 |
| Greener PartnersNorristown | Form 990 | $1,066,098FY2025 |
| Nine Mile Run Watershed Association IncPittsburgh | Form 990 | $1,053,869FY2025 |
| Manada ConservancyHummelstown | Form 990 | $1,025,505FY2024 |
| Partners for Environmental StewardshipLancaster | Form 990 | $1,000,000FY2025 |
| Three Rivers Waterkeeper IncPittsburgh | Form 990 | $993,276FY2025 |
| Friends of Rittenhouse SquarePhiladelphia | Form 990 | $989,281FY2025 |
| The Energy Efficiency AlliancePhiladelphia | Form 990 | $982,442FY2025 |
| Mindful Materials IncSpring City | Form 990 | $975,015FY2024 |
| Stream Restoration IncorporatedSlippery Rock | Form 990 | $961,164FY2024 |
| Regional Science Consortium at Presque Isle CenterErie | Form 990 | $936,540FY2025 |
| Beaver County Marcellus Awareness CommunityAmbridge | Form 990 | $929,867FY2024 |
| Pennenvironment Research and Policy CenterPhiladelphia | Form 990 | $855,797FY2025 |
| Whitemarsh FoundationLafayette Hill | Form 990 | $818,669FY2025 |
| Delaware Highlands ConservancyBeach Lake | Form 990 | $816,785FY2024 |
| Buttonwood Nature Center IncWaynesboro | Form 990 | $793,280FY2025 |
| Pocono Northeast Resource Conservation & Development CouncilDalton | Form 990 | $776,130FY2025 |
| Edward L Rose Conservancy IncFriendsville | Form 990 | $776,122FY2025 |
| Westmoreland CleanwaysGreensburg | Form 990 | $759,426FY2025 |
| Gettysburg Nature AllianceGettysburg | Form 990 | $754,310FY2024 |
| Green Valleys Association of Southeastern PennsylvaniaPottstown | Form 990 | $739,481FY2025 |
| Group Against Smog and Pollution IncPittsburgh | Form 990 | $696,245FY2025 |
| Lake Wallenpaupack Watershed Management DistrictHawley | Form 990 | $685,796FY2024 |
| Ned Smith Center for Nature and ArtMillersburg | Form 990 | $684,226FY2025 |
| Sustainable PittsburghPittsburgh | Form 990 | $682,371FY2025 |
| The Merrill W Linn Land & Waterways ConservancyLewisburg | Form 990 | $675,476FY2024 |
| Hollow Oak Land Trust IncMoon Township | Form 990 | $667,726FY2024 |
| Loyalhanna Watershed Association IncLigonier | Form 990 | $619,880FY2025 |
| Appleford CommitteeVillanova | Form 990 | $612,227FY2024 |
51 to 100 of 985