Post Offices List in Defiance County, Ohio:
| Defiance Post Office | 420 W 2nd St, Defiance, OH 43512 |
| Farmer Post Office | 3948 State Route 2, Farmer, OH 43520 |
| Hicksville Post Office | 110 E Edgerton St, Hicksville, OH 43526 |
| Jewell Post Office | 7852 Independence Rd, Jewell, OH 43530 |
| Mark Center Post Office | 10577 Farmer Mark Rd, Mark Center, OH 43536 |
| Ney Post Office | 170 E Main St, Ney, OH 43549 |
| Sherwood Post Office | 109 N Harrison St, Sherwood, OH 43556 |
| Evansport Post Office | 1110 S Main St, Evansport, OH 43519 |