A Dissertation Submitted in Partial Fulfillment of the Requirements for Award of the Degree of Master of Business Administration in Corporate Management.This study assessed the factors hindering the Integration of Population variables in Development Planning (IPDP). The study was conducted at the President’s Office - Planning Commission (POPC) particularly in the Population Planning Unit. The study was prompted by the recognition that despite some studies that have been done it is still among the most narrowly studied areas, also the problem still persist, so it was the aim of the study to see the prospects underlying Integration of Population variables in Development Planning (IPDP). A sample of 20 respondents was interviewed, using structured questionnaires, focus group discussion and personal interview. Secondary data was collected through reading the published documents, reports, files, books and other available documents in PPU office and Internet. SPSS was used to code and analyze data gathered for interpretations. The targeted populations were from POPC (PPU), Ministry of Finance as well as from Temeke, Ilala and Kinondoni municipals in Dar es Salaam region. The findings show that there are numerous factors hindering Integration of Population variables into Development Planning (IPDP). These are lack of facilities like computers, lack of adequately trained staff on IPDP, lack of fund, lack of reliable and valid data, lack of commitment to some planners and leaders, lack of mass education on IPDP, just to mention a few. The study recommended that training in IPDP is required and should be regarded as a central pillar towards realization of integrating population aspects in the development plans. Also planning offices in all levels should be equipped with relevant facilities like computers which is involved in the planning exercise. Availability of funds and real commitment both of leaders and the general public will ensure successful Integration of Population variables in Development Planning (IPDP).