dear maher 

 for estimate population,  the best way is using simulation  , there some tools to do that like netlogo 

https://ccl.northwestern.edu/netlogo/

Dear Maher,

I did some estimation for the population in my Master thesis, you will find the methods in chapter three, the methods wrote in Arabic language, but it can give you some ideas and guide your work.

Regards

https://www.researchgate.net/publication/282913310_Further_Urban_Development_in_the_Governorate_of_Khanyunis_in_the_Light_of_Maintaining_the_Environmental_resources_by_using_GIS_and_RS

Dear Dr.Sohaib,

Thank you for your response , your feedback will help me a lot. I have read what you did to estimate future population, it is very nice work.

Kind regards.