| Other organizations in Iowa |
| Id | Name | Address | State | Established | Total Income |
| 1 | Butler County Rural Electric Cooperative | 521 N Main St, Allison, IA 50602-7711 | IA | 1938-09 | $25,585,518 |
| 2 | Butler Foundation | 800 Main St, Dubuque, IA 52001-6822 | IA | 1996-07 | $7,655,504 |
| 3 | Butler Foundation | 898 Mount Carmel Rd, Dubuque, IA 52003-7944 | IA | 2000-11 | $1 |
| 4 | C & Ws Rustic Hollow Shelter Inc | PO BOX 67, Nashua, IA 50658-0067 | IA | 1999-02 | $316,457 |
| 5 | C B Landscape Tr | 25 Main Pl Ste 550, Council Blfs, IA 51503-0700 | IA | 2003-04 | $193,863 |
| 6 | C H Buck Taylor Scholarship | PO BOX 8, Guthrie Ctr, IA 50115-0008 | IA | 1992-03 | $5,002 |
| 7 | C Richard Stark Jr Foundation | 1422 Central Ave, Fort Dodge, IA 50501-4252 | IA | 1990-04 | $474,054 |
| 8 | C Robert Brenton And Babette Cbrenton Foundation | 1441 29th St, West Des Moines, IA 50266-1309 | IA | 2008-03 | $166,807 |
| 9 | Cadet Athletic Boosters Inc | PO BOX 132, Iowa Falls, IA 50126-0132 | IA | 1987-07 | $61,208 |
| 10 | Cafe Johnson County | 5109 110th Street Ne, Solon, IA 52333 | IA | 2002-10 | $82 |
| 11 | Calamus Little League Association | 2330 190th St, Calamus, IA 52729 | IA | 1994-08 | $0 |
| 12 | Calamus Wheatland Athletic Boosters Club | 1610 Hwy 30, Calamus, IA 52729 | IA | 2005-03 | $0 |
| 13 | Caleb Ministries Inc, Kristi Casteel Kristi Casteel | 285 34th St Se, Cedar Rapids, IA 52403 | IA | 2004-12 | $0 |
| 14 | Calendar Gals Cancer Fund Inc | 6980 Cody Dr Unit 8, W Des Moines, IA 50266-2449 | IA | 2007-02 | $54,095 |
| 15 | Calhoun County Economic Development Corporation | PO BOX 47, Rockwell City, IA 50579-0047 | IA | 1991-05 | $96,828 |
| 16 | Calhoun County Electric Cooperative Association | 1015 Tonawanda St, Rockwell City, IA 50579-1803 | IA | 1937-12 | $4,851,305 |
| 17 | Calhoun County Exposition | PO BOX 253, Rockwell City, IA 50579-0253 | IA | 1946-09 | $133,978 |
| 18 | Calhoun County Historical Society | 855 Richmond St, Rockwell City, IA 50579-1816 | IA | 1966-04 | $170,904 |
| 19 | Calhoun Mutual Insurance Association | 114 N Illinois St, Lake City, IA 51449-1707 | IA | 1988-05 | $152,724 |
| 20 | Calu Inc | PO BOX 460, Mechanicsvlle, IA 52306-0460 | IA | 1984-01 | $319,819 |
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