| Business | Phone |
| Gillam Township Trustee 4588 N County Rd 250 E, Rensselaer 47978 | (219) 843-7753 |
| Marion Twp Trustee 219 W Harrison St # 2, Rensselaer 47978 | (219) 866-7740 |
| Rensselaer Building Dept 122 S Van Rensselaer St, Rensselaer 47978 | (219) 866-2311 |
| Rensselaer City Electric 425 N Van Rensselaer St, Rensselaer 47978 | (219) 866-8475 |
| Rensselaer City Gas 813 E Walnut St, Rensselaer 47978 | (219) 866-5206 |
| Rensselaer City Light Plant 425 N Van Rensselaer St, Rensselaer 47978 | (219) 866-5513 |
| Rensselaer Clerk 124 S Van Rensselaer St, Rensselaer 47978 | (219) 866-5213 |
| Rensselaer Line Dept 812 E Vine St, Rensselaer 47978 | (219) 866-8371 |
| Rensselaer Sewer Dept 820 E Walnut St, Rensselaer 47978 | (219) 866-5699 |
| Union Twp Trustee 6817 N Us Highway 231, Rensselaer 47978 | (219) 866-8305 |