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Hammond, 
United States
301,148 people lived in Hammond in 2025. It is the 1903rd largest of the world's 12,138 cities, and the 62nd largest in the United States.
Like every city on this site, Hammond 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 Hammond grew
For every 10 people in Hammond in 1975, there were 13.8 in 2025.
On the UN's projection it will have 281,338 people in 2050. It passed 250,000 people between 1995 and 2000.
projected (after 2025) · how sure the UN is: high moderate low
How to read this: read it left to right, 1975 to 2050, one column every five years, the height being people. Hatching marks the projected years. Below, a strip of the UN's confidence: strong colour where the census maps are recent and detailed, pale where they are not, blank where the place was not counted as a city.
People · your family's years · 1975 to 2050
Hammond through your family’s years
Put in the years your family were born. You’ll see how many people lived in Hammond 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). Hammond 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, Hammond covered 163 km², and buildings, roads and other built-up land covered 40 km² of it. That is 132 m² of built-up land for each person, about a square 11 by 11 metres. Since 1975, its built-up land has grown by 74%, and its people have grown by 38%.
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 Hammond, which is 301,148 people.
How to read this: 1,000 squares, one for every 1,000th person in the United States; the coloured squares live in Hammond. 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
- 1899 Orai India301,946
- 1900 Owo Nigeria301,931
- 1901 Jigani India301,763
- 1902 Changxing China301,206
- 1903 Hammond301,148
- 1904 Amroha India301,108
- 1905 Siwan India300,919
- 1906 Khanewal Pakistan300,722
- 1907 Ado Nigeria300,622
In the United States, 2025
- 1779 Buffalo322,892
- 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
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 Hammond 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 Hammond 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