| Business | Phone |
| Blair Cnty Adult Parole/Prbtn 423 Allegheny St # 330, Hollidaysburg 16648 | (814) 693-3190 |
| Blair Cnty Domestic Relations 423 Allegheny St # 327, Hollidaysburg 16648 | (814) 693-3220 |
| Blair Cnty Voters Registration 423 Allegheny St # 43, Hollidaysburg 16648 | (814) 693-3150 |
| Blair County Assessment Office 423 Allegheny St # 41, Hollidaysburg 16648 | (814) 693-3110 |
| Blair County Buildings & Grnds 423 Allegheny St, Hollidaysburg 16648 | (814) 693-3250 |
| Blair County Commissioners 423 Allegheny St # 142, Hollidaysburg 16648 | (814) 693-3030 |
| Blair County Controller's Office 423 Allegheny St # 141, Hollidaysburg 16648 | (814) 693-3040 |
| Blair County Costs & Fines 423 Allegheny St # 139, Hollidaysburg 16648 | (814) 693-3200 |
| Blair County Courthouse Cstdn 423 Allegheny St # 1, Hollidaysburg 16648 | (814) 693-3122 |
| Blair County Custody Office 423 Allegheny St # 228, Hollidaysburg 16648 | (814) 693-3205 |
| Blair County Data Processing 423 Allegheny St # 32, Hollidaysburg 16648 | (814) 693-3060 |
| Blair County Microfilm Office 423 Allegheny St # 45, Hollidaysburg 16648 | (814) 693-3121 |
| Blair County Office Svc 423 Allegheny St # 24, Hollidaysburg 16648 | (814) 693-3260 |
| Blair County Planning Comm 509 Walnut St, Hollidaysburg 16648 | (814) 693-3245 |
| Blair County Prothonotary 423 Allegheny St # 144, Hollidaysburg 16648 | (814) 693-3080 |
| Blair County Purchasing Office 423 Allegheny St, Hollidaysburg 16648 | (814) 693-3180 |
| Blair County Register & Rcrdr 423 Allegheny St # 145, Hollidaysburg 16648 | (814) 693-3095 |
| Blair County Treasurer's Office 423 Allegheny St # 111, Hollidaysburg 16648 | (814) 693-3120 |
| Blair Countysolid Waste& Rcycl 423 Allegheny St, Hollidaysburg 16648 | (814) 696-4620 |
| Honorable Elizabeth Doyle 423 Allegheny St, Hollidaysburg 16648 | (814) 693-3210 |
| Penn State Cooperative Ext 509 Walnut St, Hollidaysburg 16648 | (814) 940-5989 |