| Business | Phone |
| Maintenance Shop 401 W Fir St, Mount Vernon 98273 | (360) 336-6210 |
| Mount Vernon Building Inspctn Mount Vernon 98273 | (360) 336-6243 |
| Mount Vernon Planning & Bldg 910 Cleveland Ave, Mount Vernon 98273 | (360) 336-6214 |
| Mount Vernon Emergency Comms 320 W Broadway, Mount Vernon 98273 | (360) 336-6294 |
| Mount Vernon Finance Drctr Ofc 910 Cleveland Ave, Mount Vernon 98273 | (360) 336-6207 |
| Mount Vernon Passports 910 Cleveland Ave, Mount Vernon 98273 | (360) 419-3252 |
| Mount Vernon Waste Water Plant 1401 Britt Rd, Mount Vernon 98273 | (360) 336-6219 |