Khalil Shahr (Persian:خليل شهر, also Romanized as Khalīl Shahr; formerly, Khalil Mahalleh (Persian: خليل محله), also Romanized as Khalīl Maḩalleh and Khallī Mahalleh) is a city in the Central District of Behshahr County, Mazandaran Province, Iran. At the 2006 census, its population was 10,096, in 2,485 families.