Union City Police Department 34009 Alvarado Niles Rd, Union City, CA94587 The Union City Police Department is dedicated to reducing crime and improving the quality of life of Union City…More residents. When the UCPD was founded in 1966, there were 12 police officers and one secretary. To serve Union City's growing community, there are now 81 officers and a professional support staff of 37. Under the leadership of Chief Greg Stewart, UCPD provides around-the-clock service, including patrol, investigations, community and animal control services. Its field operations division includes a gang task force, narcotics taks force, traffic unit, canine unit and a volunteer program.