The Tomczak surname
In the 2010 U.S. Census, 2,566 people carried this name — #12,140 among all U.S. surnames, about 1 in every 114,900 people counted. That is up 1% from 2,550 in 2000.
Where the name comes from
The origin of the Tomczak surname
From Tomek + -ak.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Tomczak» (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
19,655 people named Tomczak have a registered home in Poland.
Of the 21,610 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 353 people named Tomczak.
123 of them were born outside France. Those born in France came from 26 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
31 people named Tomczak live in Switzerland.
They live in 4 of Switzerland’s 26 cantons, most of all in Bern.
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 31 people named Tomczak 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 Antwerp.
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
66 people named Tomczak 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
Tomczak in American newspapers,
1916–1930.
Chronicling America, Library of Congress — digitised newspapers in the public domain.
Who carried it
People named Tomczak,
with a public archive behind them.
-
Kazimierz Tomczak 1883–1967 · Catholic priest -
Roman Tomczak 1900–1973 · military personnel -
Józef Tomczak 1885–1958 · politician
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Mieczysław Tomczak 1886–1949 · politician
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Bolesław Tomczak 1908–1942
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Kazimierz Tomczak 1911–1942
Wikidata and Wikimedia Commons (CC0).
Nearby in the index
Surnames next to Tomczak.
- Tomasi 1,074 · U.S. census
- Tomasini 1,012 · U.S. census
- Tomasino 627 · U.S. census
- Tomassi 659 · U.S. census
- Tomasso 700 · U.S. census
- Tomaszewski 3,579 · U.S. census
- Tomczyk 1,312 · U.S. census
- Tome 2,007 · U.S. census
- Tomei 1,045 · U.S. census
- Tomi 111 · U.S. census
- Tomic 726 · U.S. census
- Tommasi 279 · U.S. census
When the index is not enough
This page says where Tomczak 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.