From the Wikipedia page 
Lindi Rural (Swahili: Lindi Vijijini) is one of the six districts of the Lindi Region of Tanzania. It is bordered to the north by the Kilwa District, to the south by the Mtwara Region, to the west by the Nachingwea District, and to the east by the Indian Ocean and the Lindi Urban District.
The Lindi Rural District is administratively divided into twenty-eight wards. Twenty-four of them are classified as "rural" and four as "mixed."