Narsingdi Sadar upazila on the north, banchharampur upazila on the east, Homna upazila on the south and Rupganj and Sonargaon upazilas on the west.

Araihazar thana was established in 1921 and was turned into an upazila in 1983. It consists of 12 union parishads, 182 mouzas and 315 villages.

Araihazar Upazila is located in Narayanganj District. Upazilla(s)/Thana(s) in Narayanganj are Araihazar Upazila, Bandar Upazila, Narayanganj Sadar Upazila, Rupganj Upazila, Sonargaon Upazila.