The Thach surname
In the 2000 U.S. Census, 4,657 people carried this name — #6,688 among all U.S. surnames, about 1 in every 57,800 people counted.
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In France’s civil register
France’s register of deaths holds 67 people named Thach.
Most of them — 62 — were born outside France. Those born in France came from 5 départements, most often Loire.
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 Switzerland’s population statistics
40 people named Thach live in Switzerland.
They live in 5 of Switzerland’s 26 cantons, most of all in St. Gallen.
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 Thach.
- Teti 1,177 · U.S. census
- Teton 138 · U.S. census
- Tetreau 259 · U.S. census
- Tetu 237 · U.S. census
- Teutsch 571 · U.S. census
- Teyssier 177 · U.S. census
- Thai 8,440 · U.S. census
- Thal 461 · U.S. census
- Thaler 2,063 · U.S. census
- Thalmann 456 · U.S. census
- Thao 15,463 · U.S. census
- Tharin 116 · U.S. census
When the index is not enough
This page says where Thach 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.