The Lucas surname
In the 2010 U.S. Census, 107,690 people carried this name — #286 among all U.S. surnames, about 1 in every 2,740 people counted. That is up 7% from 100,417 in 2000.
In France’s civil register
France’s register of deaths holds 18,974 people named Lucas.
419 of them were born outside France. Those born in France came from 101 départements, most often Côtes-d’Armor.
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 3,215 people named Lucas 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 1,435 people named Lucas 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 Hainaut.
Where it concentrates, on the mapWhere they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
In Ireland’s birth registers, 1890
Ireland registered 22 births for the Lucas name in 1890.
Most were registered in Ulster. By the Registrar-General’s own method — births multiplied by 44.38 — that is about 1,000 people bearing the name in Ireland at the time. The Registrar-General’s note on the name: “Tyrone and Cavan.”
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they were born, 1890
Registrar-General for Ireland, «Special Report on Surnames in Ireland» (R. E. Matheson, 1894), births index of 1890 — public domain.
In Switzerland’s population statistics
579 people named Lucas live in Switzerland.
They live in 21 of Switzerland’s 26 cantons, most of all in Vaud.
Where it concentrates, on the mapWhere 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
62 people named Lucas have a registered home in Poland.
Of the 177 in Poland’s national register, these are the ones with a permanent address on file. They live in 12 of Poland’s 16 voivodeships, most of all in Warmian-Masurian.
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
159 people named Lucas are counted in Sweden and Finland.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published. 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) · Digital and Population Data Services Agency (DVV), Finland, surname statistics, August 2026 — CC BY 4.0.
In print
Lucas in American newspapers,
1880–1921.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 591,888 pages in all carry the name.
Who carried it
People named Lucas,
with a public archive behind them.
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Gervase Lucas d. 1667 · diplomat
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Franz Lucas d. 1917 · writer
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John Lucas d. 1556 · politician
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Henry Lucas d. 1910 · barrister
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Friedrich Lucas d. 1874 · publisher
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P. C. Lucas d. 1918 · Private
Wikidata (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Lucas.
- Lubrano 1,079 · U.S. census
- Luby 1,941 · U.S. census
- Luc 2,636 · U.S. census
- Luca 1,837 · U.S. census
- Lucarelli 1,949 · U.S. census
- Lucarini 210 · U.S. census
- Lucca 938 · U.S. census
- Lucchese 795 · U.S. census
- Lucchesi 2,207 · U.S. census
- Lucchetti 475 · U.S. census
- Lucchi 203 · U.S. census
- Lucchini 147 · U.S. census
When the index is not enough
This page says where Lucas 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.