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Bori, 
Nigeria
148,370 people lived in Bori in 2025. It is the 4091st largest of the world's 12,138 cities, and the 146th largest in Nigeria.
Like every city on this site, Bori 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 Bori grew
Where Bori had 10 people in 1995, it had 27.1 in 2025.
On the UN's projection it will have 350,742 people in 2050. On the UN's projection it passes 250,000 people between 2035 and 2040. The UN first counts it as a city in 1995, 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
Bori through your family’s years
Put in the years your family were born. You’ll see how many people lived in Bori in each of those years, and when each of them turned 30.
Nigeria · every city · 2025
Where it is
How to read this: Bori is the dot in colour with a ring around it. The grey dots are the other cities of Nigeria in 2025, 457 in all, led by Lagos, each drawn with an area that matches its people. Countries next door are outlines only.
Area and built-up land · km²
How much land it covers
In 2025, Bori covered 13 km², and buildings, roads and other built-up land covered 2.6 km² of it. That is 18 m² of built-up land for each person, about a square 4 by 4 metres. Since 1995, its built-up land has grown to 2 times its size, and its people are 2.7 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 Nigeria
Its share of Nigeria
Of every 1,000 people in Nigeria in 2025, 1 lived in Bori, which is 148,370 people.
How to read this: 1,000 squares stand for everyone in Nigeria, one square for every 1,000th person. Count the coloured ones and you have Bori's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 4034 Mawza` Yemen150,293
- 4052 Tshimbulu Democratic Republic of the Congo149,595
- 4071 Bairgachhi India148,986
- 4078 Ongata Rongai Kenya148,823
- 4091 Bori148,370
- 4103 Suncheon-si South Korea147,975
- 4117 Mukanga Democratic Republic of the Congo147,526
- 4118 Baffa Pakistan147,524
- 4131 Garhi Habibullah Pakistan147,308
In Nigeria, 2025
- 3167 Ago-Iwoye189,841
- 3209 Amassoma188,265
- 3278 Akugba183,921
- 3628 Unguwar Arewa166,817
- 4091 Bori148,370
- 4389 Rubuchi138,912
- 4522 Okposi134,677
- 7870 Enugu-Ezike79,250
- 8887 Ikot Ide69,806
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 Bori are the UN's own, at five-year steps: an estimate for each of 1995 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 Bori 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