The Sedlak surname
In the 2010 U.S. Census, 2,128 people carried this name — #14,119 among all U.S. surnames, about 1 in every 138,900 people counted. That is down 1% from 2,146 in 2000.
In Poland’s population register
1,315 people named Sedlak have a registered home in Poland.
Of the 1,465 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 Lublin.
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 56 people named Sedlak.
14 of them were born outside France. Those born in France came from 11 départements, most often 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 Switzerland’s population statistics
34 people named Sedlak 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 the Nordic population registers
21 people named Sedlak 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
Sedlak in American newspapers,
1906–1912.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 1,925 pages in all carry the name.
Who carried it
People named Sedlak,
with a public archive behind them.
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Elena Sedlak 1938–2024 · actor -
Johann Sedlak 1820–1870 · pastor
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Fritz Sedlak 1895–1977 · composer
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Leopold Sedlak 1905–1942
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Włodzimierz Sedlak 1911–1993 · geologist
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Luboš Sedlak 1951– · badminton player
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Sedlak.
- Seckler 399 · U.S. census
- Second 107 · U.S. census
- Secondi 124 · U.S. census
- Secret 112 · U.S. census
- Secula 147 · U.S. census
- Sedano 3,048 · U.S. census
- See 9,081 · U.S. census
- Seeger 4,129 · U.S. census
- Seel 1,002 · U.S. census
- Seelig 1,271 · U.S. census
- Seemann 1,044 · U.S. census
- Seewald 718 · U.S. census
When the index is not enough
This page says where Sedlak 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.