Language and ethnicity The largest ethnic group in Nowshahr is the
Mazandarani people and they speak the Kojuri dialect of the language. They are also fluent in
Persian, the official language of Iran.
Population At the time of the 2006 National Census, the city's population was 40,578 in 11,550 households. The following census in 2011 counted 43,378 people in 12,695 households. The 2016 census measured the population of the city as 49,403 people in 16,287 households. ==Climate==