The Dodoma Region lies in the heart of Tanzania in the eastern-central part of the country, the main city being about 300 miles (480 km) from the coast. The region, which is primarily semi-arid, covers an area of 41,311 square kilometres (15,950 sq mi), making it slightly larger than Switzerland (41,284 square kilometres (15,940 sq mi)). The region is bordered by the Manyara Region to the north, the Tanga region to the north east, the Singida Region to the west, the Iringa Region to the south, and the Morogoro Region to the east and southeast. The Wami River Sub-Basin “
extends from the semi-arid Dodoma region to the humid inland swamps in the Morogoro region to Saadani Village in the coastal Bagamoyo district”, and the Kikuyu River also flows through the region, flowing near the city of Dodoma itself.
The region produces beans, seeds, grain, peanuts, coffee, tea, and tobacco. Cattle are also raised and marketed.
Chamwino District is one of the seven districts of the Dodoma Region of Tanzania. It is bordered to the north by Chemba District, to the east by Manyara Region, Kongwa District and Mpwapwa District, to the south by Iringa Region, and to the west by Singida Region, Bahi District and Dodoma District. Its administrative seat is the town of Chamwino.
According to the 2012 Tanzania National Census, the population of Chamwino District was 330,543
Paved trunk road T3 from Morogoro to Dodoma and paved trunk road T5 from Dodoma to Iringa pass through the district.
The central railway of Tanzania passes through Chamwino District as well.