The Rega surname
In the 2010 U.S. Census, 969 people carried this name — #25,503 among all U.S. surnames, about 1 in every 303,000 people counted. That is up 1% from 961 in 2000.
In Poland’s population register
240 people named Rega have a registered home in Poland.
Of the 280 in Poland’s national register, these are the ones with a permanent address on file. They live in 11 of Poland’s 16 voivodeships, most of all in Lubusz.
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 Argentina’s national register
At least 197 people named Rega 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 Buenos Aires Province.
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 Belgium’s population register
At least 102 people named Rega live in Belgium.
Statbel only publishes a name in a municipality when five or more people there share it, so the real number is higher. Most of them live in Flemish Brabant.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
In France’s civil register
France’s register of deaths holds 81 people named Rega.
26 of them were born outside France. Those born in France came from 12 départements, most often Martinique.
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
41 people named Rega live in Switzerland.
They live in 5 of Switzerland’s 26 cantons, most of all in Vaud.
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.
Who carried it
People named Rega,
with a public archive behind them.
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Henri Joseph Rega 1690–1754 · physician -
Horacio A. Rega Molina 1899–1957 · poet -
Filippo Rega 1761–1833 · engraver
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Giuseppe Rega 1825–1891 · politician
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Mary Rega Molina 1895–1960 · writer
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Mary Rega Molina 1910–1960 · writer
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Rega.
- Redondo 2,276 · U.S. census
- Redoutey 148 · U.S. census
- Reeb 1,436 · U.S. census
- Reed 277,030 · U.S. census
- Rees 12,754 · U.S. census
- Reff 657 · U.S. census
- Regal 1,157 · U.S. census
- Regaldo 241 · U.S. census
- Regazzi 189 · U.S. census
- Rege 351 · U.S. census
- Regel 311 · U.S. census
- Regen 273 · U.S. census
When the index is not enough
This page says where Rega 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.