The Katz surname
In the 2000 U.S. Census, 30,615 people carried this name — #1,045 among all U.S. surnames, about 1 in every 8,810 people counted.
In France’s civil register
France’s register of deaths holds 462 people named Katz.
123 of them were born outside France. Those born in France came from 38 départements, most often Paris.
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
227 people named Katz live in Switzerland.
They live in 17 of Switzerland’s 26 cantons, most of all in Zurich.
Where it concentrates, on the mapWhere 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.
In Belgium’s population register
At least 119 people named Katz 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 Poland’s population register
21 people named Katz have a registered home in Poland.
Of the 320 in Poland’s national register, these are the ones with a permanent address on file. They live in 4 of Poland’s 16 voivodeships, most of all in Masovian.
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.
Nearby in the index
Surnames next to Katz.
- Kassem 678 · U.S. census
- Kassim 730 · U.S. census
- Kast 1,978 · U.S. census
- Kastler 485 · U.S. census
- Kastner 4,047 · U.S. census
- Kaszuba 559 · U.S. census
- Kauffmann 892 · U.S. census
- Kaufman 34,786 · U.S. census
- Kaufmann 6,664 · U.S. census
- Kaupp 434 · U.S. census
- Kaus 859 · U.S. census
- Kauss 229 · U.S. census
When the index is not enough
This page says where Katz 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.