The Blaszczyk surname
In the 2010 U.S. Census, 643 people carried this name — #35,057 among all U.S. surnames, about 1 in every 454,500 people counted. That is up 3% from 623 in 2000.
In Poland’s population register
22,829 people named Blaszczyk have a registered home in Poland.
Of the 25,235 in Poland’s national register, these are the ones with a permanent address on file. They live in all 16 of Poland’s voivodeships, most of all in Łódź.
Where it concentrates, on the mapWhere they live today
PESEL register, Ministry of Digital Affairs of Poland (dane.gov.pl) — CC0 · living people by voivodeship of permanent residence, 20 January 2026.
In France’s civil register
France’s register of deaths holds 269 people named Blaszczyk.
77 of them were born outside France. Those born in France came from 27 départements, most often Pas-de-Calais.
Where it concentrates, on the mapWhere they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
In Switzerland’s population statistics
33 people named Blaszczyk live in Switzerland.
They live in 5 of Switzerland’s 26 cantons, most of all in Zurich.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In the Nordic population registers
45 people named Blaszczyk is counted in Sweden.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published.
Counted, by country
Own calculations based on data from Statistics Sweden (SCB), surnames with at least two bearers, 31 December 2022 — CC BY 4.0 (names with 20 or more bearers shown).
Who carried it
People named Blaszczyk,
with a public archive behind them.
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Michael Blaszczyk 1959– · painter
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Zdzisław Stanisław Błaszczyk 1969– · Catholic priest
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Anna Blaszczyk 1981– · director
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Nicole Blaszczyk 1987– · beauty pageant contestant
Wikidata (CC0).
Nearby in the index
Surnames next to Blaszczyk.
- Blaquiere 156 · U.S. census
- Blas 3,612 · U.S. census
- Blasco 1,044 · U.S. census
- Blaser 2,931 · U.S. census
- Blasi 1,524 · U.S. census
- Blasquez 218 · U.S. census
- Blatt 4,020 · U.S. census
- Blatter 828 · U.S. census
- Blattner 1,371 · U.S. census
- Blatz 644 · U.S. census
- Blau 2,965 · U.S. census
- Blay 1,229 · U.S. census
When the index is not enough
This page says where Blaszczyk is.
A volume says what happened to it.
Every page in the index is free and stays free. The Heritage Volume is the long form: the full paper trail, the arms, the crossing — bound, and yours.