| Business | Phone |
| County Bayview Bridge 2000 State Highway 42 57, Sturgeon Bay 54235 | (920) 743-8141 |
| County Bridge 2 Michigan St, Sturgeon Bay 54235 | (920) 743-3573 |
| County Sanitarian 421 Nebraska St, Sturgeon Bay 54235 | (920) 746-2308 |
| Real Estate Tax Listing 421 Nebraska St, Sturgeon Bay 54235 | (920) 746-2287 |
| Door County Administrator 421 Nebraska St, Sturgeon Bay 54235 | (920) 746-2552 |
| Door County Circuit Ct Clerk 421 Nebraska St C310, Sturgeon Bay 54235 | (920) 746-2205 |
| Door County Corporate Counsel 421 Nebraska St, Sturgeon Bay 54235 | (920) 746-2228 |
| County Government Ctr 421 Nebraska St, Sturgeon Bay 54235 | (920) 854-6161 |
| Door County Data Processing 421 Nebraska St, Sturgeon Bay 54235 | (920) 746-2390 |
| Door County Human Resource Dir 421 Nebraska St, Sturgeon Bay 54235 | (920) 746-2305 |
| Door County Information System 421 Nebraska St, Sturgeon Bay 54235 | (920) 746-2498 |
| Door County Maintenance Supv 421 Nebraska St, Sturgeon Bay 54235 | (920) 746-2211 |
| Door County Museum 18 N 4th Ave, Sturgeon Bay 54235 | (920) 743-5809 |
| Door County Planner 421 Nebraska St, Sturgeon Bay 54235 | (920) 746-2323 |
| Door County Register Of Deeds 421 Nebraska St, Sturgeon Bay 54235 | (920) 746-2270 |
| Door County Senior Resource 832 N 14th Ave, Sturgeon Bay 54235 | (920) 746-2542 |
| Door County University Ext Svc 421 Nebraska St A120, Sturgeon Bay 54235 | (920) 746-2260 |
| Door County Veteran's Svc Ofc 421 Nebraska St A340, Sturgeon Bay 54235 | (920) 746-2226 |
| Emergency Services 319 S 18th Ave, Sturgeon Bay 54235 | (920) 743-5461 |
| Senior Citizen Ctr 832 N 14th Ave, Sturgeon Bay 54235 | (920) 743-6828 |