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Ongata Rongai, 
Kenya
148,823 people lived in Ongata Rongai in 2025. It is the 4078th largest of the world's 12,138 cities, and the 15th largest in Kenya.
This is the UN's built-up area, drawn from satellite pictures and census maps rather than from the city limits, and the two can be a long way apart. The rule behind it.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Ongata Rongai grew
Count 10 people in Ongata Rongai in 1995 and the same count gives 26.3 in 2025.
On the UN's projection it will have 368,458 people in 2050. On the UN's projection it passes 250,000 people between 2025 and 2030. The UN first counts it as a city in 1995, when it passed 50,000 people.
projected (after 2025) · how sure the UN is: high moderate low
How to read this: each column is one of the UN's five-yearly estimates, 1975 through 2050, and taller means more people. Where a column is hatched the year has not happened yet. The strip under the columns is the UN's own confidence in each figure, palest where it is least sure; where it is blank the city was not on the list at all.
People · your family's years · 1975 to 2050
Ongata Rongai through your family’s years
Put in the years your family were born. You’ll see how many people lived in Ongata Rongai in each of those years, and when each of them turned 30.
Kenya · every city · 2025
Where it is
How to read this: every dot is one of the 50 cities in Kenya in 2025, and a dot's area is how many people live there, the biggest being Nairobi. The ringed dot in colour is Ongata Rongai; the grey dots are the rest. The outlines around them are neighbouring countries.
Area and built-up land · km²
How much land it covers
In 2025, Ongata Rongai covered 22 km², and buildings, roads and other built-up land covered 4.8 km² of it. That is 32 m² of built-up land for each person, about a square 6 by 6 metres. Since 1995, its built-up land has grown by 85%, and its people are 2.6 times as many.
How to read this: each pale square is the city's whole area, the strong square inside it the part that is built on; one scale for all three, so a bigger square is more land. Hatched is the UN's projection.
Of every 100 people in Kenya
Its share of Kenya
Of every 1,000 people in Kenya in 2025, 3 lived in Ongata Rongai, which is 148,823 people.
How to read this: 1,000 squares, one for every 1,000th person in Kenya; the coloured squares live in Ongata Rongai. The grey rest live in other cities, in towns or in the countryside.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 4014 Tanjung Pinang Indonesia150,872
- 4034 Mawza` Yemen150,293
- 4052 Tshimbulu Democratic Republic of the Congo149,595
- 4071 Bairgachhi India148,986
- 4078 Ongata Rongai148,823
- 4091 Bori Nigeria148,370
- 4103 Suncheon-si South Korea147,975
- 4117 Mukanga Democratic Republic of the Congo147,526
- 4118 Baffa Pakistan147,524
In Kenya, 2025
- 2526 Mutuati232,440
- 2983 Kisii200,579
- 3249 Naivasha185,944
- 3687 Embu164,283
- 4078 Ongata Rongai148,823
- 5136 Vihiga119,644
- 7167 Kiambu86,758
How to read this: the figure in front of a name is where that city stands among the 12,138 cities the UN counted in 2025, and each bar is its people, on one scale per list. Numbers are missing where a city has fewer than 300,000 people and so has no page of its own.
Apparatus
Sources and method
The figures for Ongata Rongai are the UN's own, at five-year steps: an estimate for each of 1995 to 2025, then projection to 2050. Projected years are drawn hatched, and the UN publishes no range of uncertainty for a city. What a city means here, how the UN measures one, and why that number can differ from the one Ongata Rongai publishes about itself: how the figures here are put together.
Sources: UN WUP 2025 · Natural Earth · flag-icons. Every source, its licence and how to cite it →
Verified 2026-09-30 · 73 canaries