| Item | Obligations |
|---|---|
| Department of Defense | $1.1B |
| Department of the Treasury | $204M |
| Department of Agriculture | $128M |
| Department of Veterans Affairs | $68.4M |
| Department of Energy | $44.3M |
| General Services Administration | $41.5M |
| Department of Transportation | $27.4M |
| Department of Health and Human Services | $22.8M |
| Department of Homeland Security | $21.8M |
| Department of Labor | $16.7M |
Department of Defense was the top federal buyer in Iowa, obligating $1.1B (63.1% of the state total).