County 47

Nairobi County

Nairobi County is one of Kenya’s 47 counties. Its headquarters is Nairobi City and it has 17 constituencies. The 2019 census counted 4,397,073 residents.

Nairobi County at a glance

County code
47
Headquarters
Nairobi City
Governor
Sakaja Arthur Johnson
Deputy governor
James Njoroge Muchiri
Population (2019 census)
4,397,073
Population (2024 projection)
4,828,205
Area
897.3 km²
Population density
4,900 people per km²
Gross County Product
KSh 4,105,576 million
Constituencies
17

Constituencies in Nairobi County

ConstituencyMPWards
Dagoretti North Beatrice Kadeveresia Elachi (ODM) 5
Dagoretti South John Kiarie Waweru (UDA) 5
Embakasi Central Benjamin Gathiru Mejjadonk (UDA) 5
Embakasi East Paul Ongili Babu Owino (ODM) 5
Embakasi North James Mwangi Gakuya (UDA) 5
Embakasi South Julius Musili Mawathe (WDM-K) 5
Embakasi West Mark Samuel Muriithi Mwenje (JP) 4
Kamukunji Yusuf Hassan Abdi (JP) 5
Kasarani Ronald Kamwiko Karauri (Independent) 5
Kibra Peter Ochieng Orero (ODM) 5
Langata Phelix Odiwuor Khodhe (ODM) 5
Makadara George Aladwa Omwera (ODM) 4
Mathare Anthony Tom Oluoch (ODM) 6
Roysambu Augustine Kamande Mwafrika (UDA) 5
Ruaraka Tom Joseph Kajwang’ (ODM) 5
Starehe Amos Mwago Maina (JP) 6
Westlands Timothy Wanyonyi Wetang’ula (ODM) 5

Sources: Kenya National Bureau of Statistics (2019 Kenya Population and Housing Census; Gross County Product 2025), IEBC. Office holders reflect the 2022 general election and may change after by-elections or court rulings.