Colonia is located in Middlesex County, NJ. The population is 17,263, making Colonia the 10th largest city in Middlesex County.
There are 6 public schools in Colonia with an average Homefacts rating of B. The total crime rate for Colonia is low , and there are 4 registered sex offenders residing in the city. Unemployment in Colonia is moderate and the median home sales price is $0. Detailed and up-to-date Colonia property reports are available for any property address.
Cities near Colonia include Clark Township, Iselin and Rahway.