| Name | Address, Zip |
| North Central After Care | None, 50548 |
| Humboldt County Agricultural Society | Po Box 391, 50548-0391 |
| Modern Woodmen Of America | 1103 3rd Ave Sw Apt 2, 50548-1845 |
| American Legion Auxiliary | 1205 9th Ave Sw, 50548-2447 |
| American Legion | Po Box 271, 50548-0271 |
| Business And Professional Womens Club Of Humboldt Iowa | 1103 7th Ave Sw, 50548-2427 |
| Humboldt County Ministerial Association And Partners Inc | 7 River Oaks, 50548-8705 |
| Humboldt County Animal Shelter Inc | 1308 19th St N, 50548-1062 |
| 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 |
| International Association Of Lions Clubs | 811 2nd Ave N, 50548-1620 |
| Indian Mound Cemetery Association Incorporated | 2620 Juniper Ave, 50548-8834 |
| Humboldt County Historical Association | Po Box 162, 50548-0162 |
| East Beaver Cemetery Association | 2024 Kentucky Ave, 50548-8760 |
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| Humboldt Fire Rescue Association | 29 5th St S, 50548-2024 |
| Humboldt Athletic Booster Club | 801 Sumner Ave, 50548-1764 |
| Brave Bags | 709 1st Ave N, 50548-1715 |
| Oak Hill Baptist Church | 905 13th St Sw, 50548-2470 |
| Corn Belt Power Cooperative | Po Box 508, 50548-0508 |
| International Brotherhd - Boilrmkrs Ir Shp Bldrs Blcksmth Frgrs & Hlpr | 906 Taft St S, 50548-2354 |
| Humboldt Music Boosters Inc | Po Box 234, 50548-0234 |
| United States Bowling Congress Inc | 1708 Wildcat Rd Apt 16, 50548-1875 |
| Iowa Farm Bureau Federation | Po Box 95, 50548-0095 |
| 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 |
| Humboldt - Dakota City Chamber Of Commerce | 604 Sumner Ave, 50548-1761 |
| Skip & Jean Christensen Foundation Inc | 806 Oak Hill Dr, 50548-2475 |
| Zion Lutheran Church | 1005 11th Ave N, 50548-1223 |
| St Marys Church | 307 4th St N, 50548-1647 |
| Victory Church Of Humboldt | 27 6th St S, 50548-2028 |
| Humboldt Wildcat Wrestling Club | 901 11th St N, 50548-1252 |
| Nokomis Woodworking Club Inc | 2202 W River Dr, 50548-2638 |
| 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 |
| Knights Of Columbus | 307 4th St N, 50548-1647 |
| Humboldt Community School Education Foundation | Po Box 37, 50548-0037 |
| Humboldt County Housing Development Corp | 902 9th St S, 50548-2320 |
| Mid Iowa Economic Development Corporation | Po Box 509, 50548-0509 |
| Humboldt County Hospice Foundation | 1000 15th St N, 50548-1008 |
| Humboldt County Memorial Hospital Foundation | 1000 15th St N, 50548-1008 |
| Partnership For Economic Growth Of Humboldt County Inc | 29 5th St S, 50548-2024 |
| River Development Inc | 2014 W River Dr, 50548-2634 |
| 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 |
| Thrivent Financial For Lutherans | 205 Sumner Ave, 50548-2552 |
| 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 |
| Justin Hinners Memorial Scholarship Fund Inc | 404 3rd Ave N Apt 3, 50548-1672 |
| Humota Movie Group Inc | Po Box 6, 50548-0006 |
| Humboldt Hardpack Inc | 2033 K Rd, 50548-8764 |
| Humboldt Homes Ltd | 1107 19 N, 50548-1057 |
| Humboldt Humane Society | Po Box 424, 50548-0424 |
| Humboldt Project Prom Inc | 10 Woodland Dr, 50548-8703 |
| Thundercats Softball Inc | 1823 Elmhurst Ave, 50548-1883 |
| Kiwanis International Inc | 1515 Creekside Dr, 50548-3300 |
| Iowa Teacher Supply Swap Inc | 2202 W River Dr, 50548-2638 |
| Rotary International | Po Box 64, 50548-0064 |
| Two Rivers Jr Pistol Spp | 501 6th Ave S, 50548-2220 |
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