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Kutubdia, 
Bangladesh
1,053,339 people lived in Kutubdia in 2025. It is the 488th largest of the world's 12,138 cities, and the 8th largest in Bangladesh.
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 Kutubdia grew
Count 10 people in Kutubdia in 1975 and the same count gives 178.5 in 2025.
On the UN's projection it will have 1.5 million people in 2050. It passed a million people between 2020 and 2025.
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
Kutubdia through your family’s years
Put in the years your family were born. You’ll see how many people lived in Kutubdia in each of those years, and when each of them turned 30.
Bangladesh · every city · 2025
Where it is
How to read this: Kutubdia 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, Kutubdia covered 512 km², and buildings, roads and other built-up land covered 21 km² of it. That is 20 m² of built-up land for each person, about a square 4 by 4 metres. Since 1980, its built-up land has grown to 11.6 times its size, and its people are 9.6 times as many.
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, 6 lived in Kutubdia, which is 1.1 million people.
How to read this: shrink Bangladesh to 1,000 people and this is what you get. The coloured squares are the ones who would live in Kutubdia; the grey ones are everybody else, in other cities, in towns and out in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 484 Naha Japan1,060,017
- 485 Bangui Central African Republic1,056,949
- 486 Al Hillah Iraq1,055,267
- 487 Tshikapa Democratic Republic of the Congo1,054,686
- 488 Kutubdia1,053,339
- 489 Tuen Mun Hong Kong1,053,083
- 490 Kottayam India1,043,314
- 491 Sarvestan Iran1,039,168
- 492 Barharia India1,038,927
In Bangladesh, 2025
- 169 Brahmanbaria2,914,727
- 387 Kishoreganj1,324,096
- 409 Sylhet1,242,548
- 475 Khulna1,074,134
- 488 Kutubdia1,053,339
- 560 Chandanaish928,788
- 709 Rajshahi755,347
- 740 Louhajang725,057
- 802 Mymensingh677,433
How to read this: the number before each name is its place among all 12,138 cities in the world in 2025; bars are people, on one scale per list. Only cities that reach 300,000 people have a page here, so a gap in the numbers is a smaller city.
Apparatus
Sources and method
The figures for Kutubdia 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 Kutubdia 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