| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Chevy Chase, Washington, D.C. | 20015 |
| Postal/ZIP Codes in North Pole, Washington, D.C. | 88888 |
| Postal/ZIP Codes in Washington, Washington, D.C. | 20001, 20002, 20003, 20004, 20005, … |
| Postal/ZIP Codes in Washington Navy Yard, Washington, D.C. | 20374, 20376, 20391 |