The administrative seat for the district is in the city of Njombe.

Njombe Urban District was formally established when it was gazetted in March 2012.

It was created out of the south-eastern part of the old Njombe District that had been in Iringa Region.

As of the 2010 elections the area that became Njombe Urban District had one constituency:[3][4] Njombe Urban District is administratively divided into divisions.

As of 2012, Njombe Urban District was administratively divided into fourteen wards:[5]