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Saint-Louis, 
Senegal
270,413 people lived in Saint-Louis in 2025. It is the 2153rd largest of the world's 12,138 cities, and the 7th largest in Senegal.
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 Saint-Louis'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 Saint-Louis grew
Where Saint-Louis had 10 people in 1975, it had 31.3 in 2025.
On the UN's projection it will have 461,809 people in 2050. It passed 250,000 people between 2020 and 2025.
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
Saint-Louis through your family’s years
Put in the years your family were born. You’ll see how many people lived in Saint-Louis in each of those years, and when each of them turned 30.
Senegal · every city · 2025
Where it is
How to read this: every dot is one of the 26 cities in Senegal in 2025, and a dot's area is how many people live there, the biggest being Dakar. The ringed dot in colour is Saint-Louis; the grey dots are the rest. The outlines around them are neighbouring countries.
Area and built-up land · km²
How much land it covers
In 2025, Saint-Louis covered 48 km², and buildings, roads and other built-up land covered 7.6 km² of it. That is 28 m² of built-up land for each person, about a square 5 by 5 metres. Since 1975, its built-up land has grown to 3.6 times its size, and its people are 3.1 times as many.
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 Senegal
Its share of Senegal
Of every 100 people in Senegal in 2025, 1 lived in Saint-Louis, which is 270,413 people.
How to read this: shrink Senegal to 100 people and this is what you get. The coloured squares are the ones who would live in Saint-Louis; 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
- 2149 Jind India270,881
- 2150 Hassan India270,626
- 2151 Eket Nigeria270,603
- 2152 Nagano Japan270,476
- 2153 Saint-Louis270,413
- 2155 Ambano Madagascar270,357
- 2156 Kapoeta South Sudan270,167
- 2157 Saghatta Bangladesh270,148
- 2158 Minakhan India270,142
In Senegal, 2025
- 992 M'bour553,170
- 1059 Thiès521,678
- 1365 Kaolack412,347
- 2057 Ziguinchor282,751
- 2153 Saint-Louis270,413
- 2430 Tambacounda241,254
- 2461 Diourbel237,795
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 Saint-Louis 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 Saint-Louis 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