Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
At the time of the 2006 National Census, Kohanabad's population was 1,630 in 457 households, when it was a village in Kohanabad Rural District of the former Aradan District of Garmsar County. The following census in 2011 counted 1,509 people in 473 households. The 2016 census measured the population as 1,192 people in 450 households, by which time the district had been separated from the county in the establishment of Aradan County, and Kohanabad had been elevated to the status of a city. Kohanabad and the rural district were transferred to the new Kohanabad District.
Kohanabad can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3071724" in the "Unique Feature Id" form, and clicking on "Search Database".