The Marciniak surname
In the 2010 U.S. Census, 2,647 people carried this name — #11,821 among all U.S. surnames, about 1 in every 111,100 people counted. About the same as in 2000 (2,637).
Where the name comes from
The origin of the Marciniak surname
From Marcin + -ak.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Marciniak» (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
33,749 people named Marciniak have a registered home in Poland.
Of the 36,898 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 622 people named Marciniak.
229 of them were born outside France. Those born in France came from 34 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
53 people named Marciniak live in Switzerland.
They live in 6 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 34 people named Marciniak 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 Brussels-Capital.
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
104 people named Marciniak 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
Marciniak in American newspapers,
1893–1921.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 1,665 pages in all carry the name.
Who carried it
People named Marciniak,
with a public archive behind them.
-
Florian Marciniak 1915–1944 · military personnel -
Stanisław Marciniak 1915–1953 -
Janusz Marciniak 1916–1944 · aircraft pilot -
Bronisław Marciniak 1950– · chemist -
Zbigniew Marciniak 1952– · mathematician
Wikidata and Wikimedia Commons (CC0) · 129 lives in all are documented under this name.
Nearby in the index
Surnames next to Marciniak.
- Marchiori 210 · U.S. census
- Marchisio 212 · U.S. census
- Marcia 961 · U.S. census
- Marciano 2,929 · U.S. census
- Marcille 295 · U.S. census
- Marcin 714 · U.S. census
- Marcinkowski 815 · U.S. census
- Marck 280 · U.S. census
- Marco 3,082 · U.S. census
- Marcolini 324 · U.S. census
- Marcon 454 · U.S. census
- Marcone 305 · U.S. census
When the index is not enough
This page says where Marciniak 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.