Topics
Islampur, 
India
176,380 people lived in Islampur in 2025. It is the 3428th largest of the world's 12,138 cities, and the 566th largest in India.
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 Islampur grew
For every 10 people in Islampur in 1990, there were 29.6 in 2025.
On the UN's projection it will have 306,630 people in 2050. On the UN's projection it passes 250,000 people between 2035 and 2040. The UN first counts it as a city in 1990, when it passed 50,000 people.
projected (after 2025) · how sure the UN is: high moderate low
How to read this: one column every five years, 1975 to 2050; its height is the number of people. Hatched columns are the UN's projection. The thin strip beneath says how sure the UN is of each figure: the stronger the colour, the surer. A blank means the place was not on the UN's list of cities that year.
People · your family's years · 1975 to 2050
Islampur through your family’s years
Put in the years your family were born. You’ll see how many people lived in Islampur in each of those years, and when each of them turned 30.
India · every city · 2025
Where it is
How to read this: India and its 2,054 cities in 2025, each a dot whose area is its number of people (the largest is New Delhi). Islampur is ringed, in colour; the other cities are grey. Neighbouring countries are outlines.
Area and built-up land · km²
How much land it covers
In 2025, Islampur covered 27 km², and buildings, roads and other built-up land covered 1.6 km² of it. That is 9 m² of built-up land for each person, about a square 3 by 3 metres. Since 2015, its built-up land has grown by 60%, and its people have grown by 24%.
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 India
Its share of India
Fewer than 1 in every 1,000 people in India lived in Islampur in 2025 — about 1 in 8,333.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 3417 Guzarah Afghanistan176,657
- 3418 Lwambo Democratic Republic of the Congo176,648
- 3422 Nkongsamba Cameroon176,511
- 3423 Madhabpur Bangladesh176,480
- 3428 Islampur176,380
- 3433 Hayfan Yemen176,151
- 3434 Layyah Pakistan176,125
- 3451 Pingtung City Taiwan175,377
- 3459 Kitenge Democratic Republic of the Congo174,943
In India, 2025
- 2985 Gamharia200,505
- 3217 Domariaganj187,658
- 3247 Meja Road186,137
- 3415 Handia176,779
- 3428 Islampur176,380
- 3871 Shahabad156,497
- 4071 Bairgachhi148,986
- 4370 Haidarganj139,637
- 4695 Sandila130,012
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 Islampur are the UN's own, at five-year steps: an estimate for each of 1990 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 Islampur 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