The Mikolajczyk surname
In the 2010 U.S. Census, 1,166 people carried this name — #22,158 among all U.S. surnames, about 1 in every 250,000 people counted. That is up 8% from 1,076 in 2000.
Where the name comes from
The origin of the Mikolajczyk surname
From Mikołajczyk.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Mikolajczyk» (English), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Poland’s population register
21,873 people named Mikolajczyk have a registered home in Poland.
Of the 23,973 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 194 people named Mikolajczyk.
68 of them were born outside France. Those born in France came from 31 départements, most often Pas-de-Calais.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
In the Nordic population registers
58 people named Mikolajczyk 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
Mikolajczyk in American newspapers,
1944–1947.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 1,545 pages in all carry the name.
Who carried it
People named Mikolajczyk,
with a public archive behind them.
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Ron Mikolajczyk 1950– · professional wrestler
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Sonia Mikolajczyk 1963– · politician
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Rafael Mikolajczyk 2000– · physician
Wikidata (CC0) · 6 lives in all are documented under this name.
Nearby in the index
Surnames next to Mikolajczyk.
- Mihai 335 · U.S. census
- Mihajlovic 168 · U.S. census
- Mika 2,451 · U.S. census
- Mikaelian 482 · U.S. census
- Miklas 527 · U.S. census
- Mikolajczak 658 · U.S. census
- Mikula 2,310 · U.S. census
- Mila 447 · U.S. census
- Milan 6,268 · U.S. census
- Milanese 574 · U.S. census
- Milani 1,416 · U.S. census
- Milano 5,609 · U.S. census
When the index is not enough
This page says where Mikolajczyk 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.
