| Business | Phone |
| Castalia Street Garage 314 Cement St, Castalia 44824 | (419) 684-5455 |
| Castalia Village Clerk 126 Main St, Castalia 44824 | (419) 684-5161 |
| City Garage 407 Bardwell Rd, Castalia 44824 | (419) 684-5549 |
| Groton Township Trustees 9414 Portland Rd, Castalia 44824 | (419) 483-7840 |
| Margaretta Township Trustees 114 Main St, Castalia 44824 | (419) 684-9500 |