The Adamczak surname
In the 2010 U.S. Census, 553 people carried this name — #39,717 among all U.S. surnames, about 1 in every 526,300 people counted. That is up 7% from 519 in 2000.
In Poland’s population register
6,746 people named Adamczak have a registered home in Poland.
Of the 7,307 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 210 people named Adamczak.
66 of them were born outside France. Those born in France came from 14 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.
Nearby in the index
Surnames next to Adamczak.
- Acosta 103,418 · U.S. census
- Acquaviva 837 · U.S. census
- Acquistapace 237 · U.S. census
- Actis 189 · U.S. census
- Ada 526 · U.S. census
- Adam 13,574 · U.S. census
- Adamczyk 2,828 · U.S. census
- Adamek 1,307 · U.S. census
- Adami 796 · U.S. census
- Adamiak 346 · U.S. census
- Adamkiewicz 253 · U.S. census
- Adamo 3,647 · U.S. census
When the index is not enough
This page says where Adamczak 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.