Prior to that it was a part of the Bannu District. The district derives its name from the headquarter town. It lies at the tail of the Marwat area therefore the town is referred to as "Lakai". The literal meaning of the word is Tail. The Lakki (Lakai) town is inhabited by Marwats, hence the proper name Lakki Marwat is derived. According to elders of the area, the original founder of this town was Hindu by the name of Lakki Ram or Lukko Ram. Other sources claim the town was initially known as Ihsan Pur and was founded by a Malik named Fateh Khan Tiwana. The district lies between 32-17 to 32-53 N Latitude and 70-23 to 71-16 E Longitude. It covers a total area of 3,164 Sq. It is bounded on the north by Bannu and Karak, to the east by Mianwali in Panjab, on the South East by Dera Ismail Khan district, and on the southwest by Tank District. To the west is the Tribal Areas of Tank District and South Waziristan Agency. The climate of the district is mostly dry. Weather is hot in summer and cool in winter. The summer season begins from April and continues till October. June is the hottest month with mean maximum and minimum temperatures of about 42 and 27 Degree Celsius respectively. In May and June, the humidity is very low and therefore the area is under periodic storms. The hot wind, locally known as "Lu" blows across the district in these months. The cool wave starts from somewhere in October. December, January and February are the winter months. In winter, the daytime temperature is not very low, however there is a sharp decrease in night. The mean maximum and minimum temperatures during this period are 20 and 4 Degree Celsius respectively. Rainfall generally occurs in July and August.
