| 1645 | Bureau County United Way | |
| 1856 | Cafe on Vine | |
| 1975 | Calvary Preschool | |
| 1130 | Camp Albrecht Acres Foundation | |
| 1952 | Camp Albrecht Acres of the Midwest | |
| 811 | CAMP COURAGEOUS OF IOWA | |
| 2271 | Camp Hertko Hollow | |
| 1988 | Camp Kidz | |
| 1315 | Camp Shalom Inc. | |
| 1134 | CASI (Center for Active Seniors Inc.) | |
| 2180 | CCKMA (Cancer Can Kiss My A**) | |
| 1699 | Center for Alcohol & Drug Services | |
| 925 | Center for Belgian Culture | |
| 1816 | Central Community Circle (CCC) Food Pantry | |
| 1393 | Central DeWitt Community Educational Foundation | |