| Business | Phone |
| Columbia Cnty Circuit Ct Clerk 400 De Witt St, Portage 53901 | (608) 742-9640 |
| Columbia Cnty Register-Deeds 400 De Witt St, Portage 53901 | (608) 742-9677 |
| Columbia Cnty Register-Probate 400 De Witt St, Portage 53901 | (608) 742-9636 |
| Columbia County Agriculture 120 W Conant St, Portage 53901 | (608) 742-2191 |
| Columbia County Annex 120 W Conant St, Portage 53901 | (608) 742-9690 |
| Columbia County Coroner's Office 711 E Cook St, Portage 53901 | (608) 742-4166 |
| Columbia County Courts Clerk 400 De Witt St, Portage 53901 | (608) 742-9620 |
| Columbia County Human Resource 120 W Conant St, Portage 53901 | (608) 742-9667 |
| Columbia County Land Cnsrvtn 120 W Conant St, Portage 53901 | (608) 742-9670 |
| Columbia County Land Info 400 De Witt St, Portage 53901 | (608) 742-9616 |
| Columbia County Zoning 400 De Witt St, Portage 53901 | (608) 742-9660 |
| Columbia County Uw Extension 120 W Conant St, Portage 53901 | (608) 742-9680 |
| Columbia County Veterans Ofc 400 De Witt St, Portage 53901 | (608) 742-9618 |
| Columbia County Victim Witness 400 Dewitt St, Portage 53901 | (608) 742-9834 |
| Columbia County Youth Building Fairgrounds, Portage 53901 | (608) 742-4608 |
| Northwoods Inc-Wisconsin N6510 Us Highway 51, Portage 53901 | (608) 742-7114 |
| Portage Nutrition Site 115 W Pleasant St, Portage 53901 | (608) 742-5100 |
| Self Central Respite Inc 711 E Cook St, Portage 53901 | (608) 742-9205 |