Law Enforcement Agencies in Mckinney, TX TX › Collin County Agencies serving the city of Mckinney in TX. Agency Types in Mckinney Coroners 1 agencies County Jails 1 agencies Municipal Police 1 agencies Sheriff 1 agencies All Agencies in Mckinney, TX Collin County Detention Center Collin County Collin County Medical Examiner Office Collin County Collin County Sheriffs Office Collin County McKinney Police Department Collin County
