| Post Office | Breckenridge |
| Division | Summit |
| Zipcode | 80424 |
| Post Office | Dillon |
| Division | Summit |
| Zipcode | 80435 |
| Post Office | Silverthorne |
| Division | Summit |
| Zipcode | 80498 |
| Post Office | Frisco |
| Division | Summit |
| Zipcode | 80443 |
| Post Office | Silverthorne |
| Division | Summit |
| Zipcode | 80497 |
4 City in Summit | List of Zip Codes Location In Colorado and Your selected County Summit