At the time of the 2006 National Census, Jahanabad's population was 4,115 in 979 households, when it was a village in Hemmatabad Rural District.[4] The following census in 2011 counted 3,837 people in 1,046 households.[5] The 2016 census measured the population of the village as 4,581 people in 1,337 households. It was the most populous village in its rural district.[2]
After the census, Jahanabad merged with the city of Borujerd.[6]
^Jahanabad can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3067473" in the "Unique Feature Id" form, and clicking on "Search Database".