Post Offices List in Oldham County, Texas:
| Adrian Post Office | 201 Historic Route 66, Adrian, TX 79001 |
| Vega Post Office | 222 N Main St, Vega, TX 79092 |
| Wildorado Post Office | 306 N Locust St, Wildorado, TX 79098 |
| Boys Ranch Post Office | 8 Julian Bivins Blvd, Boys Ranch, TX 79010 |