Data / Nonprofits / Idaho / Mackay
Nonprofits in Mackay, ID: 12 registered with the IRS
12 nonprofits are registered with the IRS in Mackay, ID, 5 of them 501(c)(3) charities; the 1 that report revenue took in $8.4 million. The largest by revenue: Lost River Electric Cooperative Inc ($8.4 million).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Lost River Electric Cooperative Inc | 501(c)(12) | 1943 | $8.4 million | $12.8 million | 2025-12 | |
| Ancient Free and Accepted Masons of Idaho | 501(c)(8) | 1972 | $0 | $0 | 2025-06 | |
| Christian Horse-Lovers Club Inc | Religion-related | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| International Association of Lions Clubs | 501(c)(4) | 1940 | $0 | $0 | 2026-06 | |
| Joe Nowacki Unit Post No 16 the Ame Rican Legion | Public and societal benefit | 501(c)(19) | 2026 | |||
| Lost Rivers Economic Development Inc | Community improvement and capacity building | 501(c)(3) | 2020 | $0 | $0 | 2026-05 |
| Mackay Education Association | Employment | 501(c)(5) | 2017 | $0 | $0 | 2026-08 |
| Mackay Mini Rodeo | Recreation and sports | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Mackay Rodeo Association | Recreation and sports | 501(c)(4) | 2025 | |||
| Mackay Senior Citizens Inc | 501(c)(3) | 1986 | $0 | $0 | 2025-12 | |
| Snake River Power Association Inc | 501(c)(6) | 1964 | $0 | $477,730 | 2025-09 | |
| South Custer County Historical Society Inc | 501(c)(3) | 1983 | $0 | $0 | 2025-12 |
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.