| Business | Phone |
| Adams Township Trustee 342 Lincoln Hwy E, New Haven 46774 | (260) 749-4162 |
| Milan Twp Trustee Poor Relief 5736 Thimlar Rd, New Haven 46774 | (260) 749-7205 |
| New Haven Administration Bldg 815 Lincoln Hwy E, New Haven 46774 | (260) 749-1911 |
| New Haven City Adm Bldg 815 Lincoln Hwy E, New Haven 46774 | (260) 748-7000 |
| New Haven City Council 815 Lincoln Hwy E, New Haven 46774 | (260) 748-7060 |
| New Haven City Engineer's Ofc 815 Lincoln Hwy E, New Haven 46774 | (260) 493-3416 |
| New Haven City Office 815 Lincoln Hwy E, New Haven 46774 | (260) 748-7878 |
| New Haven Clerk Treasurer's 815 Lincoln Hwy E, New Haven 46774 | (260) 493-3176 |
| New Haven Ems 910 Hartzell Rd, New Haven 46774 | (260) 749-1235 |
| New Haven Engineering Dept 815 Lincoln, New Haven 46774 | (260) 748-7030 |
| New Haven Maintenance Bldg 1433 Summit St, New Haven 46774 | (260) 749-4611 |