| Business | Phone |
| Voter Registration 100 W Beau St # 206, Washington 15301 | (724) 228-6750 |
| Washington Cnty Human Resource 100 W Beau St # 202, Washington 15301 | (724) 228-6738 |
| Washington Cnty Mental Rtrdtn 100 W Beau St # 302, Washington 15301 | (724) 228-6832 |
| Washington County Adm 100 W Beau St # 702, Washington 15301 | (724) 228-6725 |
| Washington County Adult Prbtn 29 W Cherry Ave # 413, Washington 15301 | (724) 228-6860 |
| Washington County Billing Officer 36 Old Hickory Ridge Rd, Washington 15301 | (724) 223-7181 |
| Washington County Bldg Grounds 100 W Beau St # 503a, Washington 15301 | (724) 223-4681 |
| Washington County Bridge Dept 100 W Beau St # 701, Washington 15301 | (724) 228-6855 |
| Washington County Chief Clerk 100 W Beau St # 702, Washington 15301 | (724) 228-6723 |
| Washington County Co-Op Ext 100 W Beau St # 601, Washington 15301 | (724) 228-6881 |
| Washington County Commissioner 100 W Beau St # 702, Washington 15301 | (724) 228-6724 |
| Washington County Coroner 100 W Beau St # 203, Washington 15301 | (724) 228-6785 |
| Washington County Dev Agcy 100 W Beau St # 603, Washington 15301 | (724) 228-6875 |
| Washington County Divorce Ct 90 W Chestnut St, Washington 15301 | (724) 229-5929 |
| Washington County Domestic 29 W Cherry Ave # 311, Washington 15301 | (724) 228-6756 |
| Washington County Drug & Alchl 90 W Chestnut St # 310, Washington 15301 | (724) 228-6764 |
| Washington County General Info 100 W Beau St # 105, Washington 15301 | (724) 228-6700 |
| Washington County Juvenile 29 W Cherry Ave # M414, Washington 15301 | (724) 228-6794 |
| Washington County Maintenance 100 W Beau St, Washington 15301 | (724) 228-6748 |
| Washington County Planning 100 W Beau St, Washington 15301 | (724) 228-6811 |
| Washington County Purchasing 100 W Beau St # 402, Washington 15301 | (724) 228-6740 |
| Washington County Recorder 1 S Main St # 1006, Washington 15301 | (724) 228-6806 |
| Washington County Solicitor 100 W Beau St # 702, Washington 15301 | (724) 228-6805 |
| Washington County Veterans 100 W Beau St # 703, Washington 15301 | (724) 228-6865 |
| Washington County Weights Courthouse Sq, Washington 15301 | (724) 228-6866 |
| Washington Register Of Wills 1 S Main St # 1002, Washington 15301 | (724) 228-6775 |
| Meals On Wheels 69 W Maiden St, Washington 15301 | (724) 222-9321 |
| Jury Commissioners 1 S Main St, Washington 15301 | (724) 228-6974 |
| Honorable J Albert Spence 75 E Maiden St, Washington 15301 | (724) 228-8836 |
| Honorable Jay H Dutton 200 Buffalo Center Ln, Washington 15301 | (724) 222-8122 |
| 911 Administrative Office 100 W Beau St # C1, Washington 15301 | (724) 228-6911 |
| County Garage 100 W Beau St, Washington 15301 | (724) 223-4690 |
| County Prothonotary 1 S Main St # 1001, Washington 15301 | (724) 228-6770 |