| Business | Phone |
| Code Enforcement 22 Elm St # 2, Topsham 4086 | (207) 725-1723 |
| Municipal Office 22 Elm St, Topsham 4086 | (207) 725-1718 |
| Sewer District Ofc 54 Main St, Topsham 4086 | (207) 729-3612 |
| Topsham Town Ambulance 22 Elm St, Topsham 4086 | (207) 725-1729 |
| Town Administrator 22 Elm St, Topsham 4086 | (207) 725-5821 |
| Town Landfill Foreside Rd, Topsham 4086 | (207) 725-2757 |
| Town Planning Ofc 22 Elm St, Topsham 4086 | (207) 725-1724 |