Ostrołęka Population 2026

Ostrołęka has a population of 53,740, making it the #95 biggest city in 🇵🇱 Poland, located in Mazovia. Roughly 0.1% of Poland's population lives here. It is about 32× smaller than Warsaw, the country's biggest city.

Location of Ostrołęka (capital Warsaw shown for reference). Boundaries: Natural Earth.

Population (city proper)

53,740

Rank in Poland

#95

Coordinates

53.09°N, 21.58°E

~97 m elevation · Europe/Warsaw

Distance to capital (Warsaw)

103 km

64 miles, straight line

Other big cities in Mazovia

City	Population	Rank in Poland
Warsaw	1,702,139	#1
Radom	226,794	#15
Mokotów	217,683	#16
Praga Południe	179,836	#23
Ursynów	149,775	#26
Wola	140,958	#29
Bielany	131,910	#30
Białołeka	129,106	#32

Cities near Ostrołęka

Łomża62,019 people · ~34 km away
Ostrów Mazowiecka22,653 people · ~38 km away
Zambrów22,857 people · ~46 km away
Przasnysz16,718 people · ~47 km away
Pułtusk19,039 people · ~54 km away
Wyszków26,500 people · ~55 km away

FAQ

What is the population of Ostrołęka?

Ostrołęka has a population of 53,740 (city proper, latest official figure via GeoNames), making it the #95 biggest city in Poland.

What region is Ostrołęka in?

Ostrołęka is located in Mazovia, Poland.

Is Ostrołęka the capital of Poland?

No, the capital of Poland is Warsaw, about 103 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.

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