The Jankowiak surname
In the 2010 U.S. Census, 581 people carried this name — #38,155 among all U.S. surnames, about 1 in every 500,000 people counted. That is down 5% from 610 in 2000.
In Poland’s population register
7,297 people named Jankowiak have a registered home in Poland.
Of the 7,923 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 187 people named Jankowiak.
67 of them were born outside France. Those born in France came from 21 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 Jankowiak.
- Janiec 305 · U.S. census
- Janik 3,265 · U.S. census
- Janin 110 · U.S. census
- Janis 4,233 · U.S. census
- Janiszewski 1,159 · U.S. census
- Jankovic 718 · U.S. census
- Jankowski 8,970 · U.S. census
- Janky 118 · U.S. census
- Jannetta 154 · U.S. census
- Janny 134 · U.S. census
- Janowski 2,047 · U.S. census
- Jans 983 · U.S. census
When the index is not enough
This page says where Jankowiak 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.