The Rein surname
In the 2010 U.S. Census, 4,199 people carried this name — #7,882 among all U.S. surnames, about 1 in every 70,400 people counted. That is up 5% from 3,998 in 2000.
In France’s civil register
France’s register of deaths holds 356 people named Rein.
22 of them were born outside France. Those born in France came from 25 départements, most often Haut-Rhin.
Where it concentrates, on the mapWhere they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
In Argentina’s national register
At least 313 people named Rein live in Argentina.
RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Entre Ríos.
Where it concentrates, on the mapWhere they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In Switzerland’s population statistics
112 people named Rein live in Switzerland.
They live in 10 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/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In Poland’s population register
29 people named Rein have a registered home in Poland.
Of the 71 in Poland’s national register, these are the ones with a permanent address on file. They live in 6 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.
In the Nordic population registers
511 people named Rein are counted in Norway, Finland and Sweden.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published. Norway publishes only surnames with 200 or more bearers. Finland counts its citizens, at home or abroad.
Counted, by country
Own calculations based on data from Statistics Sweden (SCB), surnames with at least two bearers, 31 December 2022 — CC BY 4.0 (names with 20 or more bearers shown) · Statistics Norway (SSB, ssb.no), table 12891, 2025 — CC BY 4.0 · Digital and Population Data Services Agency (DVV), Finland, surname statistics, August 2026 — CC BY 4.0.
Who carried it
People named Rein,
with a public archive behind them.
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Siegfried Rein d. 1915 · military officer
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Friedrich Martin Rein d. 1908 · forester
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Hans Rein d. 1999 · canoeist
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Guttorm Åsulvsson 1092–1183 · politician
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Guttorm Åsulvsson 1092–1150 · politician
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Hermann of Rein 1100–1200 · preacher
Wikidata (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Rein.
- Reifsteck 649 · U.S. census
- Reig 117 · U.S. census
- Reigner 278 · U.S. census
- Reiland 1,079 · U.S. census
- Reimann 2,372 · U.S. census
- Reimel 277 · U.S. census
- Reina 4,180 · U.S. census
- Reinard 716 · U.S. census
- Reinbold 1,377 · U.S. census
- Reinbolt 395 · U.S. census
- Reine 728 · U.S. census
- Reiner 5,202 · U.S. census
When the index is not enough
This page says where Rein 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.