Cos Cob is located in Fairfield County, CT. The population is 6,605, making Cos Cob the 8th largest city in Fairfield County.
There are 1 public schools in Cos Cob with an average Homefacts rating of B+. The total crime rate for Cos Cob is low , and there are 0 registered sex offenders residing in the city. Unemployment in Cos Cob is moderate and the median home sales price is $0. Detailed and up-to-date Cos Cob property reports are available for any property address.