Tain is one of the districts established in August 2004 in Brong Ahafo Region by Legislative Instrument (L.I) 2090.

The District was carved out of the Wenchi Municipal Assembly as a result of the growing population of the Municipal Assembly and to ensure that developmental projects reach every part of the district. The District has Nsawkaw as its capital.

It shares common boundaries with Wenchi Municipal to the East, Jaman North and Jaman South Municipal to the west, Sunyani West to the south and Berekum Municipal to the south west.

It is also bounded by the Banda District to the North and La Cote d’Ivoire to the North West. The location of Tain District has helped boost economic trade as the District continues to engage in inter-district trade with the bounded districts.

In terms of land area, Tain District covers 1,829.84960 km2 representing 3.5 percent of the total land area of the Brong Ahafo Region. Since the District is an agrarian economy, it could take advantage of the vast arable land for agriculture purposes.

The population of the district according to the Population and Housing Census stands at 88,104 with 43,508 males and 44,596 females.