Law Enforcement Agencies in Smithfield, NC NC › Johnston County Agencies serving the city of Smithfield in NC. Agency Types in Smithfield Adult Institutions 1 agencies County Jails 1 agencies Municipal Police 1 agencies Parole Probation 1 agencies Sheriff 1 agencies All Agencies in Smithfield, NC Division of Community Corrections Johnston County Johnston Correctional Institution Johnston County Johnston County Detention Center Johnston County Johnston County Sheriffs Office Johnston County Smithfield Police Department Johnston County
