The Sieradzki surname
In the 2010 U.S. Census, 320 people carried this name — #62,531 among all U.S. surnames, about 1 in every 909,100 people counted. That is down 1% from 324 in 2000.
Where the name comes from
The origin of the Sieradzki surname
From Sieradz (place name) + -zki.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Sieradzki» (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
7,197 people named Sieradzki have a registered home in Poland.
Of the 7,932 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 79 people named Sieradzki.
20 of them were born outside France. Those born in France came from 11 départements, most often Pas-de-Calais.
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 the Nordic population registers
25 people named Sieradzki 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).
Who carried it
People named Sieradzki,
with a public archive behind them.
-
Artur Sieradzki d. 1950 · judge -
Włodzimierz Sieradzki 1870–1941 · physician -
Włodzimierz Sieradzki 1870–1941 · physician
-
Makary Sieradzki 1900–1992 · philologist -
Aleksy Sieradzki 1902–1985 -
Wladimir R. von Sieradzki 1870– · psychiatrist
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Sieradzki.
- Siegenthaler 679 · U.S. census
- Sieger 960 · U.S. census
- Siegfried 3,688 · U.S. census
- Siegler 1,618 · U.S. census
- Siegrist 2,681 · U.S. census
- Siegwald 118 · U.S. census
- Sierra 35,770 · U.S. census
- Siess 451 · U.S. census
- Sigal 598 · U.S. census
- Sigala 4,817 · U.S. census
- Sigalas 136 · U.S. census
- Sigel 1,339 · U.S. census
When the index is not enough
This page says where Sieradzki 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.