Kajiado County is a county in the former Rift Valley Province of Kenya. As of 2019, Kajiado county spanned an area of 21,292.7 km2, with a recorded population of 1,117,840. The county borders Nairobi and to its south it borders the Tanzanian regions of Arusha and Kilimanjaro. The county capital is Kajiado, but the largest town is Ongata Rongai. Its main tourist attraction is its wildlife. Kajiado County has a total population of 1,117,840 people, of which 557,098 are males, 560,704 are females, and 38 intersex people. There are 316,179 households with an average size of 3.5 people per household and a population density of 51 people per square kilometre.

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