Manbij is a city in the northeast of Aleppo Governorate in northern Syria, 30 kilometers west of the Euphrates. In the 2004 census by the Central Bureau of Statistics, Manbij had a population of nearly 1…Manbij is a city in the northeast of Aleppo Governorate in northern Syria, 30 kilometers west of the Euphrates. In the 2004 census by the Central Bureau of Statistics, Manbij had a population of nearly 100,000. The population of Manbij is largely Arab, with Kurdish, Turkmen, Circassian, and Chechen minorities. Many of its residents practice Naqshbandi Sufism.