| Business | Phone |
| Warren Public Svc Dept 29500 Van Dyke Ave, Warren 48093 | (586) 574-4604 |
| Warren Purchasing 29500 Van Dyke Ave, Warren 48093 | (586) 574-4639 |
| Warren Building Dept 29500 Van Dyke Ave, Warren 48093 | (586) 574-4504 |
| Warren City Assessing 29500 Van Dyke Ave, Warren 48093 | (586) 574-4532 |
| Warren City Council 5460 Arden Ave, Warren 48092 | (586) 574-4950 |
| Warren Data Processing 29500 Van Dyke Ave, Warren 48093 | (586) 574-4612 |
| Warren Engineering Div 12821 Stephens Rd, Warren 48089 | (586) 759-9300 |
| Warren Insurance & Safety 29500 Van Dyke Ave, Warren 48093 | (586) 574-4653 |
| Warren Nine Mile Activity Ctr 8207 E 9 Mile Rd, Warren 48089 | (586) 757-7480 |
| Warren Community Improvement 29500 Van Dyke Ave, Warren 48093 | (586) 574-4687 |
| Warren Senior Citizen Activity 26600 Burg Rd, Warren 48089 | (586) 758-1300 |
| Warren Treasurer's Office 29500 Van Dyke Ave, Warren 48093 | (586) 574-4542 |
| Beautification Commission 5460 Arden Ave, Warren 48092 | (586) 573-2553 |
| City Of Warren Svc Div 29500 Van Dyke Ave, Warren 48093 | (586) 574-4662 |