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Arlington Heights, 
United States
298,081 people lived in Arlington Heights in 2025. It is the 1934th largest of the world's 12,138 cities, and the 63rd largest in the United States.
This is the UN's built-up area, drawn from satellite pictures and census maps rather than from the city limits, and the two can be a long way apart. The rule behind it.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Arlington Heights grew
For every 10 people in Arlington Heights in 1975, there were 11.4 in 2025.
On the UN's projection it will have 292,663 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
Arlington Heights through your family’s years
Put in the years your family were born. You’ll see how many people lived in Arlington Heights in each of those years, and when each of them turned 30.
United States · every city · 2025
Where it is
How to read this: the United States and its 348 cities in 2025, each a dot whose area is its number of people (the largest is New York City). Arlington Heights 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, Arlington Heights covered 141 km², and buildings, roads and other built-up land covered 39 km² of it. That is 129 m² of built-up land for each person, about a square 11 by 11 metres. Since 1975, its built-up land has grown by 45%, and its people have grown by 14%.
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 Arlington Heights, which is 298,081 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 Arlington Heights; 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
- 1928 Fungurume Democratic Republic of the Congo298,713
- 1930 Asahikawa Japan298,481
- 1931 Baochi China298,433
- 1932 Bojonegoro Indonesia298,285
- 1934 Arlington Heights298,081
- 1935 Guigang China298,077
- 1937 Shengzhou China297,906
- 1938 Xiantao China297,859
- 1939 Karur India297,598
In the United States, 2025
- 1780 Parma322,420
- 1843 Arlington311,130
- 1845 Modesto310,818
- 1903 Hammond301,148
- 1934 Arlington Heights298,081
- 1996 Louisville291,103
- 1998 Euclid290,669
- 2011 Tacoma289,128
- 2049 Poway283,508
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 Arlington Heights 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 Arlington Heights 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