| Name | Address, Zip |
| North Central After Care | None, 50548 |
| Humboldt County Ministerial Association And Partners Inc | 7 River Oaks, 50548-8705 |
| Peace Creek Animal Sanctuary & Rescue | 2628 Penn Ave, 50548-8837 |
| We Are Philanthropists Inc | Po Box 644, 50548-0644 |
| Humboldt Area Arts Council | Po Box 173, 50548-0173 |
| Humboldt Fire Rescue Association | 29 5th St S, 50548-2024 |
| Brave Bags | 709 1st Ave N, 50548-1715 |
| Humboldt Music Boosters Inc | Po Box 234, 50548-0234 |
| United States Bowling Congress Inc | 1708 Wildcat Rd Apt 16, 50548-1875 |
| Sacred Heart R C Church | 307 4th St N, 50548-1647 |
| Humboldt Dakota City Senior Citizens Center Inc | 607 1st Ave S, 50548-2008 |
| Humboldt Wellness Center Inc | 29 5th St S, 50548-2024 |
| Central Iowa Recovery Inc | 520 Sumner Ave, 50548-1759 |
| St Marys Church | 307 4th St N, 50548-1647 |
| Humboldt Wildcat Wrestling Club | 901 11th St N, 50548-1252 |
| Humboldt High School Wildcat Trap Club | 1008 8th Ave N, 50548-1220 |
| Col Foundation | 12 Willow Ridge Dr, 50548-8897 |
| We Will Collective Incorporated | 3000 Eagle Ridge Dr, 50548-1904 |
| Humboldt Community School Education Foundation | Po Box 37, 50548-0037 |
| Humboldt County Housing Development Corp | 902 9th St S, 50548-2320 |
| Humboldt County Hospice Foundation | 1000 15th St N, 50548-1008 |
| Humboldt County Memorial Hospital Foundation | 1000 15th St N, 50548-1008 |
| John Dodgen Foundation | Po Box 39, 50548-0039 |
| Lindhart Educational Trust | Po Box 509, 50548-0509 |
| Humboldt Entertainment Inc | 310 12th St N, 50548-1668 |
| West Fork Services Inc | 16 N Taft St, 50548-1704 |
| Hrc Foundation | Po Box 205, 50548-0205 |
| Humboldt Public Library Foundation | 30 6th St N, 50548-1736 |
| Humboldt Friends Of The Parks | Po Box 509, 50548-0509 |
| Humota Movie Group Inc | Po Box 6, 50548-0006 |
| Humboldt Hardpack Inc | 2033 K Rd, 50548-8764 |
| Humboldt Project Prom Inc | 10 Woodland Dr, 50548-8703 |
| Thundercats Softball Inc | 1823 Elmhurst Ave, 50548-1883 |
| Two Rivers Jr Pistol Spp | 501 6th Ave S, 50548-2220 |
| |