The Kazmierczak surname
In the 2010 U.S. Census, 1,782 people carried this name — #16,203 among all U.S. surnames, about 1 in every 166,700 people counted. That is up 4% from 1,720 in 2000.
Where the name comes from
The origin of the Kazmierczak surname
From Kazimierz + -czak.
From Wiktionary, the free dictionary (en.wiktionary.org) — entries «Kazmierczak» (English) and «Kaźmierczak» (Polish), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Poland’s population register
26,967 people named Kazmierczak have a registered home in Poland.
Of the 29,456 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 Greater Poland.
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 480 people named Kazmierczak.
163 of them were born outside France. Those born in France came from 35 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
25 people named Kazmierczak live in Switzerland.
They live in 4 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 Belgium’s population register
At least 24 people named Kazmierczak live in Belgium.
Statbel only publishes a name in a municipality when five or more people there share it, so the real number is higher. Most of them live in Hainaut.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
In the Nordic population registers
75 people named Kazmierczak 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).
In print
Kazmierczak in American newspapers,
1912–1919.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 652 pages in all carry the name.
Who carried it
People named Kazmierczak,
with a public archive behind them.
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Wacław Kaźmierczak 1905–1981 · camera operator -
Michael Kazmierczak 1898–1933 · politician
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Ludger Kazmierczak 1969– · journalist
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Marcin Kazmierczak 1973– · researcher
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Marta Kazmierczak 2002– · association football player
Wikidata and Wikimedia Commons (CC0).
Nearby in the index
Surnames next to Kazmierczak.
- Kawa 1,192 · U.S. census
- Kawecki 626 · U.S. census
- Kay 24,337 · U.S. census
- Kaya 1,455 · U.S. census
- Kayser 3,454 · U.S. census
- Kazandjian 208 · U.S. census
- Kebe 437 · U.S. census
- Kechichian 142 · U.S. census
- Keck 11,186 · U.S. census
- Kedzierski 609 · U.S. census
- Kedziora 188 · U.S. census
- Kehl 2,514 · U.S. census
When the index is not enough
This page says where Kazmierczak 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.