| Business | Phone |
| Jay Co Coop Purdue University 504 W Arch St, Portland 47371 | (260) 726-4707 |
| Jay County Building & Planning 120 N Court St, Portland 47371 | (260) 726-6903 |
| Jay County Commissioners 504 W Arch St, Portland 47371 | (260) 726-7595 |
| Jay County Commissioners Courthouse Fl 2, Portland 47371 | (260) 726-7595 |
| Jay County Custodian 120 W Main St # 1, Portland 47371 | (260) 726-6905 |
| Jay County Highway Garage 1035 E 200 N, Portland 47371 | (260) 726-8701 |
| Jay County Recorder 120 W Main St # 2, Portland 47371 | (260) 726-4572 |
| Jay County Retirement Ctr 1194 E 200 N, Portland 47371 | (260) 726-8702 |
| Jay County Surveyor 120 N Court St, Portland 47371 | (260) 726-8784 |
| Jay County Veterans Svc 504 W Arch St, Portland 47371 | (260) 726-9102 |
| Jay County Veterans Svc Courthouse Fl 1, Portland 47371 | (260) 726-9102 |
| Jay County Veterans Svc Ofc Courthouse # 1, Portland 47371 | (260) 726-6914 |
| Jay County Voter Registration 504 W Arch St, Portland 47371 | (260) 726-4951 |