Kaunia and Rajarhat upazilas on the north, Sundarganj upazila on the south, Ulipur and Sundarganj upazilas on the east, Rangpur Sadar and Mithapukur upazilas on the west.

Pirgachha thana was established in 1873 and was turned into an upazila in 1983. The upazila consists of 9 union parishads, 170 mouzas and 189 villages.

Pirgachha Upazila is located in Rangpur District. Upazilla(s)/Thana(s) in Rangpur are Badarganj Upazila, Gangachara Upazila, Kaunia Upazila, Mithapukur Upazila, Pirgachha Upazila, Pirganj Upazila, Rangpur Sadar Upazila, Taraganj Upazila.