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Hamamatsu, 
Japan
282,084 people lived in Hamamatsu in 2025. It is the 2061st largest of the world's 12,138 cities, and the 30th largest in Japan.
Like every city on this site, Hamamatsu 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 Hamamatsu grew
For every 10 people in Hamamatsu in 1975, there were 8.1 in 2025: it shrank.
On the UN's projection it will have 213,767 people in 2050. The UN's figures for Hamamatsu fall from 678,802 in 2010 to 213,767 in 2050. The UN rates its own confidence in the 2010 figure as moderate: 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
Hamamatsu through your family’s years
Put in the years your family were born. You’ll see how many people lived in Hamamatsu in each of those years, and when each of them turned 30.
Japan · every city · 2025
Where it is
How to read this: Japan and its 137 cities in 2025, each a dot whose area is its number of people (the largest is Tokyo). Hamamatsu 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, Hamamatsu covered 142 km², and buildings, roads and other built-up land covered 48 km² of it. That is 169 m² of built-up land for each person, about a square 13 by 13 metres. Since 1975, its built-up land has grown by 28%, and its people have fallen by 19%.
How to read this: the outer pale square stands for all the land the city covers, and the solid square inside it for the part with buildings, roads and the like on it. All three squares share a scale, so you can compare them by eye. A hatched one is a year the UN has projected.
Of every 100 people in Japan
Its share of Japan
Of every 1,000 people in Japan in 2025, 2 lived in Hamamatsu, which is 282,084 people.
How to read this: shrink Japan to 1,000 people and this is what you get. The coloured squares are the ones who would live in Hamamatsu; 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
- 2057 Ziguinchor Senegal282,751
- 2058 Chía Colombia282,679
- 2059 Kemangkon Indonesia282,463
- 2060 Al Majidi Yemen282,395
- 2061 Hamamatsu282,084
- 2062 Suizhou China282,058
- 2063 Moundou Chad281,943
- 2064 Ikirun Nigeria281,875
- 2065 Heroica Nogales Mexico281,580
In Japan, 2025
- 1729 Yokkaichi332,173
- 1748 Shizuoka328,613
- 1864 Nagasaki308,986
- 1930 Asahikawa298,481
- 2061 Hamamatsu282,084
- 2073 Kofu280,212
- 2152 Nagano270,476
- 2229 Hakodate261,557
- 2282 Wakayama255,782
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 Hamamatsu 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 Hamamatsu 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