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Suncheon-si, 
South Korea
147,975 people lived in Suncheon-si in 2025. It is the 4103rd largest of the world's 12,138 cities, and the 23rd largest in South Korea.
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 Suncheon-si'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 Suncheon-si grew
Where Suncheon-si had 10 people in 1975, it had 4.2 in 2025, fewer than it started with.
On the UN's projection it will have 131,433 people in 2050. The UN's figures for Suncheon-si fall from 349,570 in 1975 to 131,433 in 2050. The UN rates its own confidence in the 1975 figure as low: cities are counted from census maps, and where those are old or coarse the figures are least certain.
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
Suncheon-si through your family’s years
Put in the years your family were born. You’ll see how many people lived in Suncheon-si in each of those years, and when each of them turned 30.
South Korea · every city · 2025
Where it is
How to read this: every dot is one of the 49 cities in South Korea in 2025, and a dot's area is how many people live there, the biggest being Seoul. The ringed dot in colour is Suncheon-si; 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, Suncheon-si covered 36 km², and buildings, roads and other built-up land covered 7.3 km² of it. That is 49 m² of built-up land for each person, about a square 7 by 7 metres. Since 1975, its built-up land has grown to 2.7 times its size, and its people have fallen by 58%.
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 South Korea
Its share of South Korea
Of every 1,000 people in South Korea in 2025, 3 lived in Suncheon-si, which is 147,975 people.
How to read this: shrink South Korea to 1,000 people and this is what you get. The coloured squares are the ones who would live in Suncheon-si; 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
- 4052 Tshimbulu Democratic Republic of the Congo149,595
- 4071 Bairgachhi India148,986
- 4078 Ongata Rongai Kenya148,823
- 4091 Bori Nigeria148,370
- 4103 Suncheon-si147,975
- 4117 Mukanga Democratic Republic of the Congo147,526
- 4118 Baffa Pakistan147,524
- 4131 Garhi Habibullah Pakistan147,308
- 4208 Bontang Indonesia145,118
In South Korea, 2025
- 1487 Pohang-si382,368
- 1955 Gumi-si296,323
- 2463 Jinju-si237,707
- 3680 Iksan-si164,566
- 4103 Suncheon-si147,975
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 Suncheon-si 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 Suncheon-si 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