Sulejówek Population 2026
Sulejówek has a population of 18,414, making it the #276 biggest city in 🇵🇱 Poland, located in Mazovia. It is about 92× smaller than Warsaw, the country's biggest city.
Population (city proper)
18,414
Rank in Poland
#276
Coordinates
52.25°N, 21.27°E
~104 m elevation · Europe/Warsaw
Distance to capital (Warsaw)
18 km
11 miles, straight line
Other big cities in Mazovia
Cities near Sulejówek
FAQ
What is the population of Sulejówek?
Sulejówek has a population of 18,414 (city proper, latest official figure via GeoNames), making it the #276 biggest city in Poland.
What region is Sulejówek in?
Sulejówek is located in Mazovia, Poland.
Is Sulejówek the capital of Poland?
No, the capital of Poland is Warsaw, about 18 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.