The Bas surname
In the 2000 U.S. Census, 475 people carried this name — #42,912 among all U.S. surnames, about 1 in every 555,600 people counted.
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In France’s civil register
France’s register of deaths holds 1,262 people named Bas.
96 of them were born outside France. Those born in France came from 68 départements, most often Ain.
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 Poland’s population register
1,096 people named Bas have a registered home in Poland.
Of the 1,741 in Poland’s national register, these are the ones with a permanent address on file. They live in 15 of Poland’s 16 voivodeships, most of all in Lesser Poland.
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 Belgium’s population register
At least 854 people named Bas 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 Limburg.
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 Switzerland’s population statistics
261 people named Bas live in Switzerland.
They live in 14 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 · names with fewer than 3 bearers in a canton are not published.
Nearby in the index
Surnames next to Bas.
When the index is not enough
This page says where Bas is.
A volume says what happened to it.
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