The Kulczak surname
In the 2010 U.S. Census, 122 people carried this name — #137,327 among all U.S. surnames, about 1 in every 2,500,000 people counted. That is down 3% from 126 in 2000.
In Poland’s population register
734 people named Kulczak have a registered home in Poland.
Of the 803 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 61 people named Kulczak.
8 of them were born outside France. Those born in France came from 11 départements, most often Nord.
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.
Who carried it
People named Kulczak,
with a public archive behind them.
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Katarzyna Kulczak 1954– · canoeist
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Łukasz Kulczak 1981– · guitarist
Wikidata (CC0).
Nearby in the index
Surnames next to Kulczak.
- Kuhnel 339 · U.S. census
- Kuhner 467 · U.S. census
- Kujawa 3,039 · U.S. census
- Kukla 1,718 · U.S. census
- Kula 3,012 · U.S. census
- Kulas 2,195 · U.S. census
- Kulig 1,118 · U.S. census
- Kulik 2,137 · U.S. census
- Kull 2,701 · U.S. census
- Kullmann 289 · U.S. census
- Kummer 3,354 · U.S. census
- Kumpf 889 · U.S. census
When the index is not enough
This page says where Kulczak 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.