| Business | Phone |
| 416 District Court 210 S Mcdonald St, Mckinney 75069 | (972) 548-4529 |
| Collin County Court At Law 1 210 S Mcdonald St, Mckinney 75069 | (972) 548-4502 |
| Collin County Court At Law 3 1800 N Graves St # 140, Mckinney 75069 | (972) 548-4517 |
| Collin County Court At Law 3 210 S Mcdonald St, Mckinney 75069 | (972) 548-4517 |
| Collin County Court House 210 S Mcdonald St, Mckinney 75069 | (972) 548-4100 |
| Collin County District Clerk 210 S Mcdonald St 130, Mckinney 75069 | (972) 548-4320 |
| Collin County Juvenile Court 210 S Mcdonald St, Mckinney 75069 | (972) 548-4658 |
| County Court At Law Clerks 1800 N Graves St # 110, Mckinney 75069 | (972) 548-4529 |
| County Court Mental 1800 N Graves St # 120, Mckinney 75069 | (972) 548-4521 |
| County Court Mental 210 S Mcdonald St, Mckinney 75069 | (972) 548-4521 |