Topics
Louisville, 
United States
291,103 people lived in Louisville in 2025. It is the 1996th largest of the world's 12,138 cities, and the 64th 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 Louisville grew
For every 10 people in Louisville in 1975, there were 24.1 in 2025.
On the UN's projection it will have 308,162 people in 2050. It passed 250,000 people between 2010 and 2015.
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
Louisville through your family’s years
Put in the years your family were born. You’ll see how many people lived in Louisville 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). Louisville 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, Louisville covered 137 km², and buildings, roads and other built-up land covered 35 km² of it. That is 120 m² of built-up land for each person, about a square 11 by 11 metres. Since 1975, its built-up land has grown to 2.5 times its size, and its people are 2.4 times as many.
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 the United States
Its share of the United States
Of every 1,000 people in the United States in 2025, 1 lived in Louisville, which is 291,103 people.
How to read this: 1,000 squares, one for every 1,000th person in the United States; the coloured squares live in Louisville. The grey rest live in other cities, in towns or in the countryside.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 1991 Pangkalpinang Indonesia291,683
- 1992 Beledweyne Somalia291,630
- 1994 Cherepovets Russia291,159
- 1995 Quetzaltenango Guatemala291,105
- 1996 Louisville291,103
- 1997 Kursk Russia291,098
- 1998 Euclid290,669
- 1999 Nawada India290,657
- 2001 Baicheng China290,420
In the United States, 2025
- 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
- 2076 Copperfield279,805
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 Louisville 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 Louisville 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