The Bau surname
In the 2000 U.S. Census, 467 people carried this name — #43,546 among all U.S. surnames, about 1 in every 588,200 people counted.
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In France’s civil register
France’s register of deaths holds 439 people named Bau.
136 of them were born outside France. Those born in France came from 57 départements, most often Bas-Rhin.
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 Switzerland’s population statistics
74 people named Bau live in Switzerland.
They live in 11 of Switzerland’s 26 cantons, most of all in Vaud.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where 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 Bau.
- Battistini 271 · U.S. census
- Battiston 111 · U.S. census
- Battistoni 474 · U.S. census
- Batton 2,701 · U.S. census
- Batty 2,068 · U.S. census
- Baty 3,347 · U.S. census
- Baucher 188 · U.S. census
- Baud 224 · U.S. census
- Baude 164 · U.S. census
- Baudean 121 · U.S. census
- Baudhuin 240 · U.S. census
- Baudier 214 · U.S. census
When the index is not enough
This page says where Bau 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.