🇵🇱 Poland's demographic outlier: Sierakowice:
To Polish accounts and Polish people more generally the fact that there exists in the Pomeranian region of the country, a very traditional and relatively fecund area will come as no surprise.
However many Westerners may have never heard of the rural gmina of Sierakowice, within Kartuzy County in Kashubia not far from the major city of Gdańsk.
• According to
citypopulation.de 29.7% of the gmina's population of 21,233 is under the age of 18.
• This is about 1.6 times the Polish national share (GUS).
• The county of Kartuzy itself (Pop: 156k) is put at 26% (
citypopulation.de) under the age of 18. Again far above the national average.
• According to
Poland.gg’s data both gmina and county total births have been falling in recent years however (see table below).
• Sierakowice fell from 425 in 2018 to 287 in 2025 (
Poland.gg).
• The county likewise fell from 2,268 in 2019 to 1,691 in 2024 (
Poland.gg).
• The 2024 crude birth rates (see table below for gmina, county and national) were 14.1, 10.9 and 6.7 per 1,000 respectively (Polskawliczbach).
• There is no published gmina total fertility rate (GUS). The county figure was 1.88 in 2023 (Forsal), the highest fertility rate in Poland that year. Later posts on X cite 1.65 or 1.67.
- Whilst both figures are below the 2.1 replacement level, and births are still falling, they are the highest fertility figures in Poland in recent years.
- Discussion I found online has differing opinions on the reason for the young age profile, with some people questioning the popular narrative that this part of the country's traditional mores have been overemphasized. With some believing that the county’s youth bulge is a result of young couples leaving Gdańsk and Gdynia for cheaper houses.
- However in apparent opposition to this idea stands the fact that Sierakowice itself has births well above deaths and almost no net migration (
Poland.gg).
* Poland's demographic outlier has been an interesting topic. Perhaps Polish researchers like
@ComteWasRight will know more and can correct any of my errors in reporting and analysis. So my apologies in advance.
(Sources used:
citypopulation.de,
Poland.gg, GUS, Polskawliczbach, Forsal etc)
(Photo of Kashubian folk dress is from Polish Museum Winona website)