The Los surname
In the 2010 U.S. Census, 941 people carried this name — #26,042 among all U.S. surnames, about 1 in every 312,500 people counted. That is up 2% from 919 in 2000.
In Poland’s population register
4,907 people named Los have a registered home in Poland.
Of the 5,973 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 Lower Silesian.
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 77 people named Los.
16 of them were born outside France. Those born in France came from 20 départements, most often Oise.
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 Belgium’s population register
At least 20 people named Los 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 Antwerp.
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 the Nordic population registers
53 people named Los is counted in Sweden.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published.
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).
Who carried it
People named Los,
with a public archive behind them.
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Karel Los 1862–1903 · professor
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Frans J. Los 1865–1947 · writer
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Václav Los 1874–1942 · teacher
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Bohumil Los 1876–1919 · professor
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František Los 1903–
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Ivan Los 1904–1985 · painter
Wikidata (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Los.
When the index is not enough
This page says where Los 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.