Sierpc Population 2026

Sierpc has a population of 18,866, making it the #266 biggest city in 🇵🇱 Poland, located in Mazovia. It is about 90× smaller than Warsaw, the country's biggest city.

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

Population (city proper)

18,866

Rank in Poland

#266

Coordinates

52.86°N, 19.67°E

~106 m elevation · Europe/Warsaw

Distance to capital (Warsaw)

114 km

71 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 Sierpc

Rypin16,589 people · ~29 km away
Płock127,474 people · ~35 km away
Włocławek120,339 people · ~47 km away
Brodnica27,341 people · ~48 km away
Gostynin18,976 people · ~50 km away
Płońsk22,217 people · ~54 km away

FAQ

What is the population of Sierpc?

Sierpc has a population of 18,866 (city proper, latest official figure via GeoNames), making it the #266 biggest city in Poland.

What region is Sierpc in?

Sierpc is located in Mazovia, Poland.

Is Sierpc the capital of Poland?

No, the capital of Poland is Warsaw, about 114 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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