| Business | Phone |
| Fairfax City Office 13 2nd St Se, Fairfax 55332 | (507) 426-8381 |
| Fairfax City Office 302 3rd Ave Se, Fairfax 55332 | (507) 426-7864 |
| Fairfax Municipal Building 24 1st St Se, Fairfax 55332 | (507) 426-7269 |
| Fairfax Municipal Power Plant 206 Se 1st St, Fairfax 55332 | (507) 426-7240 |