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Austin, 
United States
1,513,032 people lived in Austin in 2025. It is the 334th largest of the world's 12,138 cities, and the 17th largest in the United States.
Like every city on this site, Austin 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 Austin grew
Count 10 people in Austin in 2000 and the same count gives 86.3 in 2025.
On the UN's projection it will have 2.2 million people in 2050. It passed a million people between 2015 and 2020. The UN first counts it as a city in 2000, when it passed 50,000 people.
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
Austin through your family’s years
Put in the years your family were born. You’ll see how many people lived in Austin 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 Austin; 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, Austin covered 616 km², and buildings, roads and other built-up land covered 125 km² of it. That is 82 m² of built-up land for each person, about a square 9 by 9 metres. Since 2000, its built-up land has grown to 7 times its size, and its people are 8.6 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 the United States
Its share of the United States
Of every 1,000 people in the United States in 2025, 4 lived in Austin, which is 1.5 million people.
How to read this: shrink the United States to 1,000 people and this is what you get. The coloured squares are the ones who would live in Austin; 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
- 330 Gorakhpur India1,519,206
- 331 Daejeon South Korea1,517,299
- 332 Jodhpur India1,515,910
- 333 Sacramento1,514,661
- 334 Austin1,513,032
- 335 Toluca Mexico1,505,035
- 336 Kananga Democratic Republic of the Congo1,504,370
- 337 Oakland1,503,319
- 338 Batam City Indonesia1,500,354
In the United States, 2025
- 290 San Antonio1,686,163
- 296 Boston1,639,797
- 329 Dallas1,521,118
- 333 Sacramento1,514,661
- 334 Austin1,513,032
- 337 Oakland1,503,319
- 359 Seattle1,403,495
- 363 Mesa1,398,369
- 364 Portland1,397,788
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 Austin are the UN's own, at five-year steps: an estimate for each of 2000 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 Austin 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