Washington zipcode
| City | Washington |
| ZIP Code | 20594 |
| Type | Company/Organization |
| State Code | DC |
| State | District of Columbia |
ZIP code of Washington is 20594. This place is located in District of Columbia state in US. To send any postal service to Washington, you must use 20594 zipcode.
You should avoid following 1 city name of District of Columbia to be used with the ZIP code 20594.
- Natl Trans Safety Board, DC