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Katoro, 
Tanzania
155,625 people lived in Katoro in 2025. It is the 3895th largest of the world's 12,138 cities, and the 21st largest in Tanzania.
That figure counts the whole built-up area, not the area Katoro governs, so it may be far from the number the city publishes about itself. How the UN measures a city.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Katoro grew
For every 10 people in Katoro in 2005, there were 25.1 in 2025.
On the UN's projection it will have 304,446 people in 2050. On the UN's projection it passes 250,000 people between 2040 and 2045. The UN first counts it as a city in 2005, when it passed 50,000 people.
projected (after 2025) · how sure the UN is: high moderate low
How to read this: read it left to right, 1975 to 2050, one column every five years, the height being people. Hatching marks the projected years. Below, a strip of the UN's confidence: strong colour where the census maps are recent and detailed, pale where they are not, blank where the place was not counted as a city.
People · your family's years · 1975 to 2050
Katoro through your family’s years
Put in the years your family were born. You’ll see how many people lived in Katoro in each of those years, and when each of them turned 30.
Tanzania · every city · 2025
Where it is
How to read this: Katoro is the dot in colour with a ring around it. The grey dots are the other cities of Tanzania in 2025, 45 in all, led by Dar es Salaam, each drawn with an area that matches its people. Countries next door are outlines only.
Area and built-up land · km²
How much land it covers
In 2025, Katoro covered 32 km², and buildings, roads and other built-up land covered 6.7 km² of it. That is 43 m² of built-up land for each person, about a square 7 by 7 metres. Since 2005, its built-up land has grown to 2.6 times its size, and its people are 2.5 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 Tanzania
Its share of Tanzania
Of every 1,000 people in Tanzania in 2025, 2 lived in Katoro, which is 155,625 people.
How to read this: 1,000 squares stand for everyone in Tanzania, one square for every 1,000th person. Count the coloured ones and you have Katoro's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 3871 Shahabad India156,497
- 3881 Bến Tre Vietnam156,097
- 3883 Madaoua Niger156,053
- 3886 Musanze Rwanda155,984
- 3895 Katoro155,625
- 3914 Sodo Ethiopia154,912
- 3916 Sohar Oman154,765
- 3917 Thatta Pakistan154,717
- 3995 Likuni Malawi151,695
In Tanzania, 2025
- 3311 Sumbawanga181,940
- 3485 Bukoba173,889
- 3670 Geita165,000
- 3768 Kahama160,713
- 3895 Katoro155,625
- 4771 Mtwara128,086
How to read this: names are in order of size, the leading number being each city's rank among all 12,138 in 2025; the bars share a scale within a list. A jump in the ranks means a city under 300,000 people, which is not given a page here.
Apparatus
Sources and method
The figures for Katoro are the UN's own, at five-year steps: an estimate for each of 2005 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 Katoro 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