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Mykolaiv, 
Ukraine
419,484 people lived in Mykolaiv in 2025. It is the 1342nd largest of the world's 12,138 cities, and the 9th largest in Ukraine.
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 Mykolaiv grew
Count 10 people in Mykolaiv in 1975 and the same count gives 10.8 in 2025.
On the UN's projection it will have 384,823 people in 2050.
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
Mykolaiv through your family’s years
Put in the years your family were born. You’ll see how many people lived in Mykolaiv in each of those years, and when each of them turned 30.
Ukraine · every city · 2025
Where it is
How to read this: Mykolaiv is the dot in colour with a ring around it. The grey dots are the other cities of Ukraine in 2025, 79 in all, led by Kiev, 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, Mykolaiv covered 80 km², and buildings, roads and other built-up land covered 20 km² of it. That is 48 m² of built-up land for each person, about a square 7 by 7 metres. Since 1975, its built-up land has grown by 44%, and its people have grown by 8%.
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 Ukraine
Its share of Ukraine
Of every 100 people in Ukraine in 2025, 1 lived in Mykolaiv, which is 419,484 people.
How to read this: shrink Ukraine to 100 people and this is what you get. The coloured squares are the ones who would live in Mykolaiv; 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
- 1338 Probolinggo Indonesia420,356
- 1339 Baidoa Somalia420,281
- 1340 Hosur India420,017
- 1341 Basirhat India419,703
- 1342 Mykolaiv419,484
- 1343 Ikot Ekpene Nigeria418,650
- 1344 Petrolina Brazil418,619
- 1345 Nice France418,294
- 1346 Eldoret Kenya418,175
In Ukraine, 2025
- 758 Donetsk705,832
- 863 Lviv627,280
- 966 Zaporizhzhia566,844
- 1161 Kryvyi Rih477,940
- 1342 Mykolaiv419,484
- 1516 Mariupol375,504
- 1572 Vinnytsia363,466
- 1612 Luhansk354,296
- 1972 Simferopol294,735
How to read this: the figure in front of a name is where that city stands among the 12,138 cities the UN counted in 2025, and each bar is its people, on one scale per list. Numbers are missing where a city has fewer than 300,000 people and so has no page of its own.
Apparatus
Sources and method
The figures for Mykolaiv 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 Mykolaiv 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