| Business | Phone |
| Greenwood Township Supervisors Rr 1, Millerstown 17062 | (717) 589-7204 |
| Greenwood Twp Office Rr 2, Millerstown 17062 | (717) 589-3915 |
| Millerstown Borough Office 209 Sunbury, Millerstown 17062 | (717) 589-3738 |
| Millerstown Borough Office 44 N High St, Millerstown 17062 | (717) 589-3738 |
| Millerstown Borough Office 55 N Market St, Millerstown 17062 | (717) 589-3738 |
| Millerstown Sewer Plant Old Highway 22, Millerstown 17062 | (717) 589-3834 |
| Tuscarora Twp Office Rr 1 Box 152, Millerstown 17062 | (717) 589-7911 |