| Item | Obligations |
|---|---|
| Department of Defense | $3B |
| Department of Transportation | $634M |
| Department of Health and Human Services | $218M |
| General Services Administration | $212M |
| Department of Veterans Affairs | $171M |
| Department of the Interior | $83.8M |
| Department of Agriculture | $53.1M |
| Department of Housing and Urban Development | $49.6M |
| Department of Justice | $39.6M |
| Department of Commerce | $38.9M |
Department of Defense was the top federal buyer in Oklahoma, obligating $3B (64.9% of the state total).