Chief Joe Greco began his Law Enforcement career in 1998 with the Hunterdon County Sheriffs Department where he was assigned to the Narcotics Task Force. In 1999 he was hired by Readington Township Police Department and assigned to the patrol division where he held the rank of Corporal and Sergeant. In 2009 he was assigned to the Detective Bureau as Detective Sergeant. He was promoted to the rank of Chief in 2017.
Chief Greco was a resident of Readington Township while growing up and attended Readington School system and graduated from Hunterdon Central High School. After graduating from Hunterdon Central he served in the United States Marine Corps from 1990 until 1994 and is a Veteran of Operation Desert Storm and Operation Restore Hope. Chief Greco is a graduate of the 250th class of the FBI National Academy.