The Slezak surname
In the 2010 U.S. Census, 2,069 people carried this name — #14,443 among all U.S. surnames, about 1 in every 142,900 people counted. That is down 1% from 2,080 in 2000.
Where the name comes from
The origin of the Slezak surname
A male surname originating as an ethnonym.
From Wiktionary, the free dictionary (en.wiktionary.org) — entries «Slezak» (English) and «Slezák» (Czech), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Poland’s population register
6,284 people named Slezak have a registered home in Poland.
Of the 6,879 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 Silesian.
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 74 people named Slezak.
29 of them were born outside France. Those born in France came from 17 départements, most often Meurthe-et-Moselle.
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 Argentina’s national register
At least 40 people named Slezak live in Argentina.
RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Buenos Aires Province.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In Switzerland’s population statistics
21 people named Slezak 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 print
Slezak in American newspapers,
1897–1914.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 2,320 pages in all carry the name.
Who carried it
People named Slezak,
with a public archive behind them.
-
Leo Slezak 1873–1946 · actor -
Margarete Slezak 1901–1953 · actor -
Walter Slezak 1902–1983 · actor -
Otto Slezak 1868–1931 · musician
-
Josef Otto Slezak 1922–2002 · teacher
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Christa Slezak-Schindler 1926– · writer
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Slezak.
- Skowron 1,178 · U.S. census
- Skowronek 776 · U.S. census
- Skowronski 2,002 · U.S. census
- Skrzypczak 327 · U.S. census
- Skrzypek 520 · U.S. census
- Slama 1,632 · U.S. census
- Slim 862 · U.S. census
- Sliwa 1,068 · U.S. census
- Sliwinski 1,223 · U.S. census
- Sloma 512 · U.S. census
- Slowik 1,477 · U.S. census
- Slowinski 913 · U.S. census
When the index is not enough
This page says where Slezak 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.