Ruiru has a population of 490,120, making it the 5th largest place we list in Kenya. It is in Kiambu County.
Ruiru holds 0.84% of Kenya's 58,636,412 people. Nairobi, the largest place we list there, is 9.0 times its size.
490,120
population
#5
in Kenya
Nearby in size
| Place | Region | Population |
|---|---|---|
| Kakamega | Kakamega County | 1,867,579 |
| Mombasa | Mombasa County | 1,208,333 |
| Nakuru | Nakuru County | 570,674 |
| Eldoret | Uasin Gishu County | 475,716 |
| Kisumu | Kisumu County | 397,957 |
| Kikuyu | Kiambu County | 323,881 |
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.