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Sunamganj, 
Bangladesh
251,822 people lived in Sunamganj in 2025. It is the 2312th largest of the world's 12,138 cities, and the 45th largest in Bangladesh.
Like every city on this site, Sunamganj is counted as a built-up area seen from above rather than as a city government's territory. Why that changes the number.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Sunamganj grew
Count 10 people in Sunamganj in 1975 and the same count gives 24.2 in 2025.
On the UN's projection it will have 456,868 people in 2050. It passed 250,000 people between 2020 and 2025.
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
Sunamganj through your family’s years
Put in the years your family were born. You’ll see how many people lived in Sunamganj in each of those years, and when each of them turned 30.
Bangladesh · every city · 2025
Where it is
How to read this: Sunamganj is the dot in colour with a ring around it. The grey dots are the other cities of Bangladesh in 2025, 233 in all, led by Dhaka, 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, Sunamganj covered 24 km², and buildings, roads and other built-up land covered 2.1 km² of it. That is 8 m² of built-up land for each person, about a square 3 by 3 metres. Since 1985, its built-up land has grown to 2.1 times its size, and its people have grown by 92%.
How to read this: the outer pale square stands for all the land the city covers, and the solid square inside it for the part with buildings, roads and the like on it. All three squares share a scale, so you can compare them by eye. A hatched one is a year the UN has projected.
Of every 100 people in Bangladesh
Its share of Bangladesh
Of every 1,000 people in Bangladesh in 2025, 1 lived in Sunamganj, which is 251,822 people.
How to read this: 1,000 squares stand for everyone in Bangladesh, one square for every 1,000th person. Count the coloured ones and you have Sunamganj's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 2302 Hadejia Nigeria252,778
- 2303 Azare Nigeria252,755
- 2308 Shendi Sudan252,344
- 2310 Rosetta Egypt252,147
- 2312 Sunamganj251,822
- 2313 Tiaret Algeria251,576
- 2314 Vladimir Russia251,498
- 2315 Golmud China251,353
- 2316 Shehong China251,287
In Bangladesh, 2025
- 1948 Moulvibazar297,098
- 2141 Chengarchar271,704
- 2143 Thakurgaon271,454
- 2157 Saghatta270,148
- 2312 Sunamganj251,822
- 2321 Rangunia250,564
- 2362 Sreemangal247,298
- 2373 Saidpur245,655
- 2469 Manikganj237,163
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 Sunamganj are the UN's own, at five-year steps: an estimate for each of 1975 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 Sunamganj 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