The Dau surname
In the 2010 U.S. Census, 1,504 people carried this name — #18,411 among all U.S. surnames, about 1 in every 196,100 people counted. That is up 32% from 1,143 in 2000.
In France’s civil register
France’s register of deaths holds 58 people named Dau.
14 of them were born outside France. Those born in France came from 13 départements, most often Bouches-du-Rhône.
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 Argentina’s national register
At least 57 people named Dau 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.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In Poland’s population register
33 people named Dau have a registered home in Poland.
Of the 151 in Poland’s national register, these are the ones with a permanent address on file. They live in 3 of Poland’s 16 voivodeships, most of all in Pomeranian.
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
30 people named Dau 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).
In print
Dau in American newspapers,
1862–1954.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 274,866 pages in all carry the name.
Who carried it
People named Dau,
with a public archive behind them.
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Herbert Wilhelm Dau 1911–2000 · politician -
Carl Dau 1942– · sailor -
Ceryan Dau 1966– · novelist -
Markus Dau 1982– · handball player -
Michael Dau 1653–1710 · mayor
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Heinrich Dau 1790–1831 · writer
Wikidata and Wikimedia Commons (CC0) · 25 lives in all are documented under this name.
Nearby in the index
Surnames next to Dau.
When the index is not enough
This page says where Dau 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.