|Established||4 March 2013|
(by 2010 Constitution of Kenya)
|Preceded by||Central Province|
|Seat of Government||Thika Town|
|• Governor||Kimani Wamatangi|
|• Total||2,449.2 km2 (945.6 sq mi)|
|• Density||990/km2 (2,600/sq mi)|
|Time zone||UTC+3 (East Africa Time)|
|Woman Member of National Assembly||Ann wa muratha|
|County Assembly||County Assembly of Kiambu|
Kiambu County is a county in the former Central Province of Kenya. Its capital is Kiambu and its largest town is Thika. Kiambu County is the second most populous after Nairobi County. Kiambu County borders Nairobi and Kajiado Counties to the South, Machakos to the East, Murang'a to the North and North East, Nyandarua to the North West, and Nakuru to the West and has a population of 2,417,735.
The county is 40% rural and 60% urban owing to Nairobi's consistent growth Northwards. The Kikuyu are the dominant tribe in the county.
The county has an average annual rainfall of 1,200 millimetres (47 in) and mean temperature of 26 °C (79 °F) with temperatures as low as 7 °C (45 °F) in the upper highlands areas of Limuru. The long rains start in mid-March and run to May, and cold runs between July and August.
According to the 2019 census, there is a total population of 2,417,735 in the county: 1,187,146 males, 1,230,454 females, and 135 intersex persons. There are 796,241 households with an average household size of 3.0 persons per household and a population density of 952 people/km2.
Administrative and political units
Administratively, the county is divided into 12 constituencies, 60 county assembly wards, 97 locations and 257 sub-locations.
- Gatundu North Constituency
- Gatundu South Constituency
- Githunguri Constituency
- Juja Constituency
- Kabete Constituency
- Kiambaa Constituency
- Kiambu Constituency
- Kikuyu Constituency
- Lari Constituency
- Limuru Constituency
- Ruiru Constituency
- Thika Town Constituency
Kimani Wamatangi is the governor of Kiambu county following the election win on a UDA Ticket and successful swearing-in after the 2022 General election. He is deputised by H.E. Rosemary Kirika who hails from Gatundu-North subcounty.
The legislature of Kiambu County is a unicameral County Assembly. It comprises 60 elected Members of County Assembly (MCA) from the 60 wards of the county and 27 nominated members. The members hold office for a five-year term each, renewable during the General Election. The speaker and deputy speaker of the assembly are elected by the MCAs. The County Assembly is located at Kiambu town.
The Kiambu High Court was established on 20 June 2016. As of 2017, it consists of a one-judge bench. It is temporarily located at Thika waiting for a permanent building to be constructed at Kiambu, the capital.
The county has a county administrator who is appointed by the President of Kenya. He is not part of the county government but is a representative of the President to assist with matters of administration in the county with regards to the national government.
In Kiambu County, there are 1,515 ECD centers, 948 primary schools, 365 secondary schools, 33 youth polytechnics, 165 adult education centers, one technical training institution, one technical institute of technology. There are four universities: one public, Jomo Kenyatta University of Agriculture & Technology and four private universities, Gretsa University, UMMA University, Mount Kenya University and Zetech University.
|Technical Training Institutes||1||0||1|
|Adult Education Centres||165||0||165||6,128|
|Institutes of Technology||1||0||1|
Kiambu County has a total of 505 health facilities: 108 are public, 64 faith-based, and 333 private. Kiambu County has 2,652 health personnel of different cadre with a doctor/population ratio of 1:6,667, while the nurse population ratio is at 1:1,110. The immunization coverage is at 89%, close to the national target of 90%.
According to 2016 estimates, HIV prevalence is at 5.6% (below the national 5.9%) and the county is ranked 6th in terms of HIV burden.
Transport and communication
The County is covered by 2,049 kilometres (1,273 mi) of road networks. Of this, 459 kilometres (285 mi) is covered by earth surface, 1,075.8 kilometres (668.5 mi) is murram surface, and 515 kilometres (320 mi) is covered by bitumen.
There are 19 Post Offices.
Trade and commerce
Tatu City is a special economic zone and an industrial park located in Ruiru sub-county. Apart from real estate, individuals and organizations have also invested in processing. Companies operating in Kiambu include: Farmers Choice Ltd, 25 Kenchic Co. Ltd, Brookside Dairies, Githunguri Dairies, Ndumberi Dairies, Limuru Milk and Palmside Dairies.
Thika sub-county has 58 industries, including Bidco Oil Industries, Devki Steel Mills, Broadway Bakeries and Kenblest, among others.
Constituencies and sub-counties
The county has twelve constituencies and forteen sub-counties. Of the twelve constituencies, Lari occupies the largest land mass at 439.2 km2 (169.6 sq mi), while Kabete is the smallest by landmass as it occupies 60.3 km2 (23.3 sq mi).
|Constituency||Area (km²)||No. of Wards||Electoral Wards|
|Lari||439.2||5||Kinale Ward, Kijabe Ward, Nyanduma Ward, Kamburu Ward, Lari/Kirenga Ward|
|Juja||326.6||5||Murera Ward, Theta Ward, Juja Ward, Witeithie Ward, Kalimoni Ward|
|Ruiru||291.9||8||Gitothua Ward, Biashara Ward, Gatongora Ward, Kahawa/Sukari Ward, Kahawa Wendani Ward, Kiuu Ward, Mwiki Ward, Mwihoko 1 Ward|
|Gatundu North||286.0||4||Gituamba Ward, Githobokoni Ward, Chania Ward, Mang'u Ward|
|Limuru||281.7||5||Bibirioni Ward, Limuru Central Ward, Ndeiya Ward, Limuru East Ward, Ngecha Tigoni Ward|
|Kikuyu||236.1||5||Karai Ward, Nachu Ward, Sigona Ward, Kikuyu Ward, Kinoo Ward|
|Thika Town||217.5||5||Township Ward, Kamenu Ward, Hospital Ward, Gatuanyaga Ward|
|Gatundu South||192.4||4||Kiamwangi Ward, Kiganjo Ward, Ndarugo Ward, Ngenda Ward|
|Kiambu||189.1||4||Ting'ang'a Ward, Ndumberi 3 Ward, Riabai Ward, Township Ward|
|Githunguri||173.5||5||Githunguri Ward, Githiga Ward, Ikinu Ward, Ngewa Ward, Komothai 3 Ward|
|Kiambaa||83.2||5||Cianda Ward, Karuri Ward, Ndenderu Ward, Muchatha Ward, Kihara Ward|
|Kabete||60.3||5||Gitaru Ward, Muguga Ward, Nyathuna Ward, Kabete Ward, Uthiru Ward|
- Gatundu North Sub-county
- Gatundu South Sub-county
- Githunguri Sub-county
- Githurai Sub-county
- Kabete Sub-county
- Kiambaa Sub-county
- Kiambu Sub-county
- Kikuyu Sub-county
- Juja Sub-county
- Lari Sub-county
- Limuru Sub-county
- Ruiru Sub-county
- Thika East Sub-county
- Thika West Sub-county
|Cities/towns/municipalities in the county|
|Core Nairobi||Nairobi County||694.9||4,397,073||Nairobi|
|Northern Metro||Kiambu County||2,449.2||2,417,735||Kiambu, Thika, Limuru, Ruiru, Karuri, Kikuyu|
|Southern Metro||Kajiado County||21,292.7||1,117,840||Kajiado, Olkejuado, Bissil, Ngong, Kitengela, Kiserian, Ongata Rongai|
|Eastern Metro||Machakos County||5,952.9||1,421,932||Kangundo-Tala, Machakos, Athi River|
Urbanisation in Nairobi Metro (Percent)
Urbanisation by County within Nairobi Metro
Poverty Level in Nairobi Metro (Percent)
Poverty level by County
Central Kenya Region
Urbanisation in Central Kenya (Percent)
Urbanisation by County in Central Kenya
Poverty Level in Central Kenya (Percent)
Poverty level by County
- Wilfred Kiboro
- Nakuru County
- Meru County
- Nairobi County
- Kajiado County
- Machakos County
- Muranga County
- Nyandarua County
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