At the time of the 2006 National Census, Dehnow-e Eslamabad's population was 534 in 141 households, when it was a village in Chahdegal Rural District of the former Rigan District of Bam County).[4] The following census in 2011 counted 3,516 people in 825 households,[5] by which time the rural district had been separated from the county in the establishment of Fahraj County. The rural district was transferred to the new Negin Kavir District, and Dehnow-e Eslamabad was transferred to Negin Kavir Rural District created in the district.[3] The 2016 census measured the population of the village as 3,367 people in 888 households.[2]
After the census, the village of Dehnow-e Eslamabad was elevated to the status of a city.[6]