As of the 1991 Bangladesh census Phulpur had a population of 459,046, with males constituting 50.98% of the population and females 49.02%. This Upazila's 18+ population is 221,110.
According to the 1991 Bangladesh census, Phulpur had a total population of 459,046, comprising 50.98% men and 49.02% women. The Upazila's adult population stands at 221,110.