The Poznanski surname
In the 2010 U.S. Census, 512 people carried this name — #42,378 among all U.S. surnames, about 1 in every 588,200 people counted. That is up 7% from 477 in 2000.
In Poland’s population register
3,760 people named Poznanski have a registered home in Poland.
Of the 4,147 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 Lesser 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 66 people named Poznanski.
14 of them were born outside France. Those born in France came from 11 départements, most often Paris.
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 Poznanski.
When the index is not enough
This page says where Poznanski 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.