Athi River has a population of 81,302, making it the 32nd largest place we list in Kenya. It is in Machakos County.
Athi River holds 0.14% of Kenya's 58,636,412 people. Nairobi, the largest place we list there, is 54 times its size.
81,302
population
#32
in Kenya
Nearby in size
| Place | Region | Population |
|---|---|---|
| Mtwapa | Kilifi County | 90,677 |
| Wajir | Wajir County | 90,116 |
| Lodwar | Turkana County | 82,970 |
| Meru | Meru County | 80,191 |
| Nyeri | Nyeri County | 80,081 |
| Isiolo | Isiolo County | 78,650 |
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.