The Mroz surname
In the 2000 U.S. Census, 2,846 people carried this name — #10,375 among all U.S. surnames, about 1 in every 94,300 people counted.
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In Poland’s population register
24,633 people named Mroz have a registered home in Poland.
Of the 27,064 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 Masovian.
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 161 people named Mroz.
52 of them were born outside France. Those born in France came from 26 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.
In Switzerland’s population statistics
31 people named Mroz live in Switzerland.
They live in 4 of Switzerland’s 26 cantons, most of all in Bern.
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.
Who carried it
People named Mroz,
with a public archive behind them.
-
Brandon Mroz 1990– · figure skater
Wikidata and Wikimedia Commons (CC0) · 15 lives in all are documented under this name.
Nearby in the index
Surnames next to Mroz.
- Moynier 127 · U.S. census
- Moyse 357 · U.S. census
- Moze 129 · U.S. census
- Mozer 483 · U.S. census
- Mroczkowski 647 · U.S. census
- Mrowka 297 · U.S. census
- Mrozek 1,526 · U.S. census
- Mucci 2,258 · U.S. census
- Mucha 2,619 · U.S. census
- Muck 2,078 · U.S. census
- Muckensturm 119 · U.S. census
- Mudry 522 · U.S. census
When the index is not enough
This page says where Mroz 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.