Newmarket is located in Rockingham County, NH. The population is , making Newmarket the 6th largest city in Rockingham County.
There are 3 public schools in Newmarket with an average Homefacts rating of B+. The total crime rate for Newmarket is low , and there are 6 registered sex offenders residing in the city. Unemployment in Newmarket is low and the median home sales price is $0. Detailed and up-to-date Newmarket property reports are available for any property address.