The Cieslak surname
In the 2010 U.S. Census, 1,746 people carried this name — #16,462 among all U.S. surnames, about 1 in every 169,500 people counted. That is up 4% from 1,685 in 2000.
Where the name comes from
The origin of the Cieslak surname
From Polish Cieślak.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Cieslak» (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
21,095 people named Cieslak have a registered home in Poland.
Of the 23,199 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 Masovian.
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 251 people named Cieslak.
88 of them were born outside France. Those born in France came from 28 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 Argentina’s national register
At least 31 people named Cieslak 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 San Luis.
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
25 people named Cieslak 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
53 people named Cieslak 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
Cieslak in American newspapers,
1912–1961.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 1,363 pages in all carry the name.
Who carried it
People named Cieslak,
with a public archive behind them.
-
Brad Cieslak 1982– · American football player -
Johannes Cieslak 1914–2003 · pastor
-
Celso Cieslak 1967– · police officer
-
Larissa Cieslak 1987– · swimmer
Wikidata and Wikimedia Commons (CC0) · 9 lives in all are documented under this name.
Nearby in the index
Surnames next to Cieslak.
- Cichocki 1,099 · U.S. census
- Cichon 1,660 · U.S. census
- Cichy 881 · U.S. census
- Cid 2,975 · U.S. census
- Ciesielski 1,555 · U.S. census
- Ciesla 1,237 · U.S. census
- Cieslik 501 · U.S. census
- Cilia 454 · U.S. census
- Cilli 267 · U.S. census
- Cima 558 · U.S. census
- Cimino 4,897 · U.S. census
- Cimmino 556 · U.S. census
When the index is not enough
This page says where Cieslak 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.