Topics
Buffalo, 
United States
322,892 people lived in Buffalo in 2025. It is the 1779th largest of the world's 12,138 cities, and the 58th largest in the United States.
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 Buffalo'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 Buffalo grew
For every 10 people in Buffalo in 1975, there were 7.6 in 2025: it shrank.
On the UN's projection it will have 308,535 people in 2050.
projected (after 2025) · how sure the UN is: high moderate low
How to read this: one column every five years, 1975 to 2050; its height is the number of people. Hatched columns are the UN's projection. The thin strip beneath says how sure the UN is of each figure: the stronger the colour, the surer. A blank means the place was not on the UN's list of cities that year.
People · your family's years · 1975 to 2050
Buffalo through your family’s years
Put in the years your family were born. You’ll see how many people lived in Buffalo in each of those years, and when each of them turned 30.
United States · every city · 2025
Where it is
How to read this: every dot is one of the 348 cities in the United States in 2025, and a dot's area is how many people live there, the biggest being New York City. The ringed dot in colour is Buffalo; 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, Buffalo covered 129 km², and buildings, roads and other built-up land covered 36 km² of it. That is 112 m² of built-up land for each person, about a square 11 by 11 metres. Since 1975, its built-up land is about the same size, and its people have fallen by 24%.
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 the United States
Its share of the United States
Of every 1,000 people in the United States in 2025, 1 lived in Buffalo, which is 322,892 people.
How to read this: 1,000 squares stand for everyone in the United States, one square for every 1,000th person. Count the coloured ones and you have Buffalo's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 1775 Huangshan China323,492
- 1776 Hải Dương Vietnam323,442
- 1777 Lucena Philippines323,308
- 1778 Valladolid Spain323,201
- 1779 Buffalo322,892
- 1780 Parma322,420
- 1781 Ciudad Victoria Mexico322,403
- 1782 Kirov Russia322,377
- 1783 Hull United Kingdom322,100
In the United States, 2025
- 1597 Memphis356,215
- 1606 McAllen355,331
- 1618 Oak Ridge353,212
- 1663 Kansas City344,125
- 1779 Buffalo322,892
- 1780 Parma322,420
- 1843 Arlington311,130
- 1845 Modesto310,818
- 1903 Hammond301,148
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 Buffalo 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 Buffalo 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