| Item | Obligations |
|---|---|
| Department of Defense | $2.5B |
| Department of Transportation | $531M |
| Department of Health and Human Services | $198M |
| General Services Administration | $189M |
| Department of Veterans Affairs | $120M |
| Department of the Interior | $69.8M |
| Department of Agriculture | $49.1M |
| Department of Housing and Urban Development | $39.6M |
| Department of Labor | $34.4M |
| Department of Justice | $31.7M |
Department of Defense was the top federal buyer in Oklahoma, obligating $2.5B (65.2% of the state total).