[2] The 2012 Tanzanian Census reported that the district had a population of 178,693, with an average household size of 4.6 people.

[2] The 2002 Tanzanian Census reported that the district had a population of 141,676, with an average household size of 4.3 people.

A rare gem only found in Mererani hills in Merereani ward in with Simanjiro District, Manyara Region.

[5] Masai millionai based in Arusha region, Saniniu Laizer made headlines in 2020 after mining three stones and selling them for approximately $5.4 million.

[3] There are a significant number of extension agents in the district who sell agricultural information.