North Mugirango is one of four constituencies in Nyamira County. In 1966, then within the former Kisii District, North Mugirango Constituency was split into West Mugirango and a smaller North Mugirango. The name was changed to Borabu / North Mugirango Constituency in 1974. In 1987 the name changed back to North Mugirango. Prior to 2013, it was formally known as North Mugirango (Borabu) Constituency after which Borabu constituency was hived off, hence its reversion to the name Mugirango Constituency.