Topics
Bydgoszcz, 
Poland
266,908 people lived in Bydgoszcz in 2025. It is the 2186th largest of the world's 12,138 cities, and the 12th 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 Bydgoszcz'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 Bydgoszcz grew
Where Bydgoszcz had 10 people in 1975, it had 10.5 in 2025.
On the UN's projection it will have 252,822 people in 2050.
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
Bydgoszcz through your family’s years
Put in the years your family were born. You’ll see how many people lived in Bydgoszcz 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). Bydgoszcz 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, Bydgoszcz covered 55 km², and buildings, roads and other built-up land covered 14 km² of it. That is 51 m² of built-up land for each person, about a square 7 by 7 metres. Since 1975, its built-up land has grown by 44%, and its people have grown by 5%.
How to read this: pale is the whole of the city's land; the stronger square inside it is what is actually built on. The three are drawn to the same scale, so a larger square really is more land, and hatching means the year is the UN's projection rather than a count.
Of every 100 people in Poland
Its share of Poland
Of every 1,000 people in Poland in 2025, 7 lived in Bydgoszcz, which is 266,908 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 Bydgoszcz's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 2177 Kabwe Zambia267,618
- 2178 Lafia Nigeria267,580
- 2180 Agbor Nigeria267,341
- 2185 Bule Hora Ethiopia267,051
- 2186 Bydgoszcz266,908
- 2187 Yaguang China266,899
- 2188 Bihpur India266,585
- 2189 Bijnor India266,240
- 2192 Porlamar Venezuela265,905
In Poland, 2025
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 Bydgoszcz 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 Bydgoszcz 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