| Business | Phone |
| Mequon Ambulance Svc 11300 N Buntrock Ave, Thiensville 53092 | (262) 242-0205 |
| City Data Enterprises Corp 10500 N Port Washington Rd, Thiensville 53092 | (262) 241-7810 |
| Mequon City Hall 11333 N Cedarburg Rd, Thiensville 53092 | (262) 242-3100 |
| Thiensville Village Hall 250 Elm St, Thiensville 53092 | (262) 242-3720 |