A river running through a deep pine forest valley

Cause EnvironmentState Idaho59 funders

Foundations that fund environment in Idaho

59 private foundations based in Idaho with a return in the last two years gave $57.7 million to environment organizations in 117 grants. The median grant was $5,000, and 11 of these foundations accept applications.

Foundations with a return in the last two years, each by its latest return (tax years 2023 to 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

Ranked by giving to environment

Top 50

Grants in each foundation’s latest return to organizations whose IRS category is environment.

  1. Holland M Ware Charitable FoundationEagle, ID · tax year 2024 1 grant Preselected only $53,240,000 to environment
  2. Islands FundBoise, ID · tax year 2024 16 grants Preselected only $2,299,597 to environment
  3. Arvy Foundation IncMeridian, ID · tax year 2024 1 grant Accepts applications $500,500 to environment
  4. Equinox Foundation IncSandpoint, ID · tax year 2024 1 grant Preselected only $240,000 to environment
  5. The Tzo' -Nah Fund DBA Native Education World IntelligenceBoise, ID · tax year 2025 1 grant Preselected only $232,407 to environment
  6. Steiner Family FoundationBoise, ID · tax year 2024 2 grants Preselected only $200,000 to environment
  7. The Confluence Institute IncKetchum, ID · tax year 2024 2 grants Preselected only $125,000 to environment
  8. Smith-Welsh FoundationHailey, ID · tax year 2025 7 grants Preselected only $102,500 to environment
  9. The Hop & Mae Adams FoundationBoise, ID · tax year 2024 1 grant Preselected only $75,584 to environment
  10. Page FoundationKetchum, ID · tax year 2024 8 grants Preselected only $70,000 to environment
  11. John and Elaine French Family FoundationKetchum, ID · tax year 2025 1 grant Preselected only $55,000 to environment
  12. Mott Family Foundation IncKetchum, ID · tax year 2024 1 grant Preselected only $50,000 to environment
  13. Oneroot FoundationKetchum, ID · tax year 2025 3 grants Preselected only $46,000 to environment
  14. Dallas and Alta Harris Family Foundation IncBoise, ID · tax year 2024 1 grant Preselected only $45,000 to environment
  15. The Terteling Foundation IncBoise, ID · tax year 2024 3 grants Preselected only $45,000 to environment
  16. Faraway FoundationTetonia, ID · tax year 2024 4 grants Preselected only $25,000 to environment
  17. Chrysopolae FoundationBellevue, ID · tax year 2025 1 grant Preselected only $25,000 to environment
  18. Boylston Family FoundationKetchum, ID · tax year 2025 1 grant Preselected only $22,500 to environment
  19. SK2 FundBoise, ID · tax year 2024 3 grants Preselected only $22,500 to environment
  20. Leonard H McIntosh FoundationKetchum, ID · tax year 2025 1 grant Accepts applications $22,500 to environment
  21. The Julius C Jeker Foundation IncBoise, ID · tax year 2024 1 grant Preselected only $20,000 to environment
  22. The Emelco FoundationHayden, ID · tax year 2025 1 grant Preselected only $16,000 to environment
  23. Idaho Power Foundation IncBoise, ID · tax year 2025 2 grants Accepts applications $15,000 to environment
  24. Simplot Company Foundation IncBoise, ID · tax year 2025 2 grants Preselected only $13,500 to environment
  25. Christensen Family FoundationKetchum, ID · tax year 2025 2 grants Preselected only $12,000 to environment
  26. Alan & Royanne Minskoff FoundationBoise, ID · tax year 2024 1 grant Preselected only $10,800 to environment
  27. Kampe Family FoundationSandpoint, ID · tax year 2024 1 grant Accepts applications $10,000 to environment
  28. The Nalen FoundationKetchum, ID · tax year 2024 3 grants Preselected only $10,000 to environment
  29. Stewart Family FoundationKetchum, ID · tax year 2025 1 grant Preselected only $10,000 to environment
  30. The Bews FoundationTwin Falls, ID · tax year 2025 1 grant Accepts applications $10,000 to environment
  31. Laura Moore Cunningham Foundation IncMcCall, ID · tax year 2024 1 grant Accepts applications $10,000 to environment
  32. Meyer Family FoundationHayden Lake, ID · tax year 2024 1 grant Preselected only $10,000 to environment
  33. Lewis-Clark Valley Healthcare FoundationCoeur Dalene, ID · tax year 2025 1 grant Accepts applications $8,000 to environment
  34. Boswell Family FoundationHailey, ID · tax year 2025 5 grants Preselected only $7,553 to environment
  35. The Teton Springs Foundation Inc 01Driggs, ID · tax year 2025 2 grants Preselected only $7,000 to environment
  36. Bates Family Foundation IncBoise, ID · tax year 2025 2 grants Preselected only $5,000 to environment
  37. Susan T Parkinson Foundation IncBoise, ID · tax year 2025 1 grant Preselected only $5,000 to environment
  38. Jr Simplot Foundation IncBoise, ID · tax year 2024 1 grant Preselected only $5,000 to environment
  39. Martin and Shirley Burns Family FoundationMeridian, ID · tax year 2025 1 grant Preselected only $5,000 to environment
  40. The Pesky Family Foundation IncBoise, ID · tax year 2024 3 grants Accepts applications $4,500 to environment
  41. Golden FoundationSun Valley, ID · tax year 2024 1 grant Preselected only $4,000 to environment
  42. The International Humanitarian Fund in Honor of Mihajlo Labalo and Jean SauerMeridian, ID · tax year 2025 2 grants Preselected only $3,500 to environment
  43. Jonathan A Holloway FoundationPost Falls, ID · tax year 2024 4 grants Accepts applications $3,200 to environment
  44. Satz-Asbury Family Foundation IncBoise, ID · tax year 2024 1 grant Accepts applications $2,500 to environment
  45. Voigt FoundationIdaho Falls, ID · tax year 2025 1 grant Preselected only $2,500 to environment
  46. Power Foundation IncMeridian, ID · tax year 2025 1 grant Preselected only $2,300 to environment
  47. Glad To Be Here Foundation IncSun Valley, ID · tax year 2025 1 grant Preselected only $2,000 to environment
  48. The Hackborn FoundationBoise, ID · tax year 2025 1 grant Preselected only $2,000 to environment
  49. Martin Djos Family FoundationHailey, ID · tax year 2025 1 grant Preselected only $1,555 to environment
  50. WEN Foundation IncBoise, ID · tax year 2025 2 grants Preselected only $1,500 to environment

Open to applications

11 foundations

The return gives an application contact and does not check the preselected-only box.

  1. Arvy Foundation IncMeridian, ID · tax year 2024 1 grant Accepts applications $500,500 to environment
  2. Leonard H McIntosh FoundationKetchum, ID · tax year 2025 1 grant Accepts applications $22,500 to environment
  3. Idaho Power Foundation IncBoise, ID · tax year 2025 2 grants Accepts applications $15,000 to environment
  4. Kampe Family FoundationSandpoint, ID · tax year 2024 1 grant Accepts applications $10,000 to environment
  5. The Bews FoundationTwin Falls, ID · tax year 2025 1 grant Accepts applications $10,000 to environment
  6. Laura Moore Cunningham Foundation IncMcCall, ID · tax year 2024 1 grant Accepts applications $10,000 to environment
  7. Lewis-Clark Valley Healthcare FoundationCoeur Dalene, ID · tax year 2025 1 grant Accepts applications $8,000 to environment
  8. The Pesky Family Foundation IncBoise, ID · tax year 2024 3 grants Accepts applications $4,500 to environment
  9. Jonathan A Holloway FoundationPost Falls, ID · tax year 2024 4 grants Accepts applications $3,200 to environment
  10. Satz-Asbury Family Foundation IncBoise, ID · tax year 2024 1 grant Accepts applications $2,500 to environment
  11. Morrison Knudsen Foundation IncBoise, ID · tax year 2025 1 grant Accepts applications $500 to environment