| Business | Phone |
| Washington Cnty Animal Shelter 1901 Se 24th Ave, Hillsboro 97123 | (503) 846-7041 |
| Washington Cnty Children Comm Hillsboro 97124 | (503) 846-4539 |
| Washington Cnty Human Resource 155 N 1st Ave # 320, Hillsboro 97124 | (503) 846-8606 |
| Washington Cnty Marriage Lcns 155 N 1st Ave, Hillsboro 97124 | (503) 846-8786 |
| Washington Cnty Med Invstgtn 155 N 1st Ave, Hillsboro 97124 | (503) 846-3575 |
| Washington Cnty Risk & Benefit 155 N 1st Ave, Hillsboro 97124 | (503) 846-8755 |
| Washington Cnty Road Operation 1400 Sw Walnut St, Hillsboro 97123 | (503) 846-7623 |
| Washington County Adm 155 N 1st Ave # 35016, Hillsboro 97124 | (503) 846-8685 |
| Washington County Assessment 155 N 1st Ave # 130, Hillsboro 97124 | (503) 846-8741 |
| Washington County Bldg Svc 155 N 1st Ave, Hillsboro 97124 | (503) 846-3470 |
| Washington County Board-Comm 155 N 1st Ave # 300, Hillsboro 97124 | (503) 846-8681 |
| Washington County Capital Mgn 1400 Sw Walnut St, Hillsboro 97123 | (503) 846-7840 |
| Washington County Casa 111 Se Washington St, Hillsboro 97123 | (503) 846-8307 |
| Washington County Conciliation 222 N 1st Ave, Hillsboro 97124 | (503) 846-3428 |
| Washington County Courts 145 Ne 2nd Ave, Hillsboro 97124 | (503) 846-8888 |
| Washington County Emergency 328 W Main St, Hillsboro 97123 | (503) 846-8699 |
| Washington County Facilities 169 N 1st Ave, Hillsboro 97124 | (503) 846-8715 |
| Washington County Finance 155 N 1st Ave # 330, Hillsboro 97124 | (503) 846-8811 |
| Washington County Fleet Mgmt 1400 Sw Walnut St # Ms50, Hillsboro 97123 | (503) 846-7700 |
| Washington County Hlth & Human 155 N 1st Ave # 200, Hillsboro 97124 | (503) 846-4402 |
| Washington County Housing Svc 111 Ne Lincoln St, Hillsboro 97124 | (503) 846-4794 |
| Washington County Juvenile 222 N 1st Ave, Hillsboro 97124 | (503) 846-8861 |
| Washington County Land Use 155 N 1st Ave # 16 # 350, Hillsboro 97124 | (503) 846-4530 |
| Washington County Mstip 1400 Sw Walnut St, Hillsboro 97123 | (503) 846-7801 |
| Washington County Passport 155 N 1st Ave # 130, Hillsboro 97124 | (503) 846-3979 |
| Washington County Planning 155 N 1st Ave # 350, Hillsboro 97124 | (503) 846-3519 |
| Washington County Purchasing 155 N 1st Ave # 210, Hillsboro 97124 | (503) 846-8737 |
| Washington County Recording Hillsboro 97124 | (503) 846-8751 |
| Washington County Roadway Engr 1400 Sw Walnut St, Hillsboro 97123 | (503) 846-7900 |
| Washington County Support Svc 155 N 1st Ave # B60, Hillsboro 97124 | (503) 846-8611 |
| Washington County Support Svc 214 W Main St, Hillsboro 97123 | (503) 846-8733 |
| Washington County Surveyor Office 155 N 1st Ave # 350-15, Hillsboro 97124 | (503) 846-8723 |
| Washington County Tech Svc 155 N 1st Ave # B30, Hillsboro 97124 | (503) 846-8421 |
| Washington County Technology 155 N 1st Ave # B60, Hillsboro 97124 | (503) 846-8721 |
| Washington County Veterans Svc 133 Se 2nd Ave, Hillsboro 97123 | (503) 640-3489 |
| Washington County Veterans Svc 180 E Main St # 130, Hillsboro 97123 | (503) 640-3489 |
| Washington County Victims Svc 150 N 1st Ave, Hillsboro 97124 | (503) 846-3020 |
| Washington County Watermaster 1400 Sw Walnut St # 240, Hillsboro 97123 | (503) 846-7780 |
| Rock Creek Treatment Facility 3125 Se River Rd, Hillsboro 97123 | (503) 846-7050 |
| Rock Creek Treatment Facility 3235 Sw River Rd, Hillsboro 97123 | (503) 547-8000 |
| Hillsboro Senior Resource Center 133 Se 2nd Ave, Hillsboro 97123 | (503) 693-0999 |
| Hillsboro Treatment Facility 770 S 1st Ave, Hillsboro 97123 | (503) 846-7050 |
| Hillsboro Treatment Plant 770 S 1st Ave, Hillsboro 97123 | (503) 547-8070 |
| Information Services-Support 155 N 1st Ave # B60, Hillsboro 97124 | (503) 648-8721 |