The Koos surname
In the 2010 U.S. Census, 926 people carried this name — #26,362 among all U.S. surnames, about 1 in every 322,600 people counted. That is up 2% from 912 in 2000.
In France’s civil register
France’s register of deaths holds 87 people named Koos.
8 of them were born outside France. Those born in France came from 12 départements, most often Haut-Rhin.
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 the Nordic population registers
47 people named Koos 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 Koos,
with a public archive behind them.
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Victor Koos 1863–1925 · painter -
Leonard V. Koos 1881–1976 · educator -
Wolfgang Koos 1930–2000 · physician
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Jean Koos 1932–2008 · association football player
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Volker Koos 1947– · physicist
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Chris Koos 1948– · politician
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Koos.
- Konig 743 · U.S. census
- Konopka 2,447 · U.S. census
- Konrad 3,052 · U.S. census
- Konrath 670 · U.S. census
- Konte 178 · U.S. census
- Koob 1,139 · U.S. census
- Kopec 2,639 · U.S. census
- Koper 641 · U.S. census
- Kopf 2,415 · U.S. census
- Kopff 132 · U.S. census
- Kopp 11,175 · U.S. census
- Koppe 387 · U.S. census
When the index is not enough
This page says where Koos 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.