| Quezon City - Big Users | |
| Area | Zip |
| Araneta Center | 810 |
| Bureau of Internal Revenue | 820 |
| Camp Aguinaldo | 802 |
| Camp Crame | 801 |
| Commission on Audit | 880 |
| Philippine Heart Center | 850 |
| National Irrigation Administration | 830 |
| Quezon City Hall | 860 |
| Social Security System | 800 |
| Veterans Hospital | 870 |
| V. Luna Hospital | 840 |
| back to Metro Manila |