The Petras surname
In the 2000 U.S. Census, 1,770 people carried this name — #15,252 among all U.S. surnames, about 1 in every 151,500 people counted.
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In France’s civil register
France’s register of deaths holds 57 people named Petras.
14 of them were born outside France. Those born in France came from 15 départements, most often Loire.
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 Switzerland’s population statistics
39 people named Petras live in Switzerland.
They live in 6 of Switzerland’s 26 cantons, most of all in Zurich.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss · names with fewer than 3 bearers in a canton are not published.
In Poland’s population register
34 people named Petras have a registered home in Poland.
Of the 89 in Poland’s national register, these are the ones with a permanent address on file. They live in 5 of Poland’s 16 voivodeships, most of all in Greater Poland.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where 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.
Nearby in the index
Surnames next to Petras.
- Petitjean 477 · U.S. census
- Petitpas 182 · U.S. census
- Petitti 680 · U.S. census
- Petkovic 223 · U.S. census
- Peton 175 · U.S. census
- Petra 303 · U.S. census
- Petre 1,522 · U.S. census
- Petrella 2,442 · U.S. census
- Petrelli 554 · U.S. census
- Petri 2,885 · U.S. census
- Petrilli 759 · U.S. census
- Petrillo 3,930 · U.S. census
When the index is not enough
This page says where Petras 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.