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Liège, 
Belgium
375,138 people lived in Liège in 2025. It is the 1517th largest of the world's 12,138 cities, and the 3rd largest in Belgium.
Like every city on this site, Liège 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 Liège grew
Count 10 people in Liège in 1975 and the same count gives 11.9 in 2025.
On the UN's projection it will have 384,123 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
Liège through your family’s years
Put in the years your family were born. You’ll see how many people lived in Liège in each of those years, and when each of them turned 30.
Belgium · every city · 2025
Where it is
How to read this: Belgium and its 16 cities in 2025, each a dot whose area is its number of people (the largest is Brussels). Liège 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, Liège covered 126 km², and buildings, roads and other built-up land covered 31 km² of it. That is 82 m² of built-up land for each person, about a square 9 by 9 metres. Since 1975, its built-up land has grown by 52%, and its people have grown by 19%.
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 Belgium
Its share of Belgium
Of every 100 people in Belgium in 2025, 3 lived in Liège, which is 375,138 people.
How to read this: 100 squares stand for everyone in Belgium, one square for every 100th person. Count the coloured ones and you have Liège's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 1513 Posadas Argentina375,741
- 1514 Viluppuram India375,616
- 1515 Tawau Malaysia375,573
- 1516 Mariupol Ukraine375,504
- 1517 Liège375,138
- 1518 İskenderun Türkiye375,056
- 1519 Haimen China374,644
- 1520 Hama Syria374,643
- 1521 Numazu Japan374,507
In Belgium, 2025
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 Liège 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 Liège 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