Topics
Sosnowiec, 
Poland
318,955 people lived in Sosnowiec in 2025. It is the 1804th largest of the world's 12,138 cities, and the 8th largest in Poland.
The UN measures every city in the world the same way, by where the buildings are rather than where the boundary runs, so this figure and Sosnowiec's own can differ widely. What counts as a city here.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Sosnowiec grew
Count 10 people in Sosnowiec in 1975 and the same count gives 10.6 in 2025.
On the UN's projection it will have 254,951 people in 2050.
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
Sosnowiec through your family’s years
Put in the years your family were born. You’ll see how many people lived in Sosnowiec in each of those years, and when each of them turned 30.
Poland · every city · 2025
Where it is
How to read this: Poland and its 60 cities in 2025, each a dot whose area is its number of people (the largest is Warsaw). Sosnowiec 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, Sosnowiec covered 94 km², and buildings, roads and other built-up land covered 17 km² of it. That is 53 m² of built-up land for each person, about a square 7 by 7 metres. Since 1975, its built-up land has grown by 48%, and its people have grown by 6%.
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 Poland
Its share of Poland
Of every 1,000 people in Poland in 2025, 8 lived in Sosnowiec, which is 318,955 people.
How to read this: 1,000 squares stand for everyone in Poland, one square for every 1,000th person. Count the coloured ones and you have Sosnowiec's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 1800 Raichur India319,647
- 1801 Timișoara Romania319,240
- 1802 Armenia Colombia319,234
- 1803 Zhangqiu China319,153
- 1804 Sosnowiec318,955
- 1805 Qili China318,490
- 1806 Malmo Sweden318,242
- 1807 Dumai Indonesia317,280
- 1808 Al-Qadarif Sudan317,258
In Poland, 2025
- 942 Lodz582,659
- 1089 Wrocław508,528
- 1121 Poznan494,839
- 1478 Gdansk384,985
- 1804 Sosnowiec318,955
- 1911 Szczecin300,314
- 1914 Lublin300,013
- 2186 Bydgoszcz266,908
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 Sosnowiec 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 Sosnowiec 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