The Klotz surname
In the 2010 U.S. Census, 6,021 people carried this name — #5,754 among all U.S. surnames, about 1 in every 49,000 people counted. About the same as in 2000 (6,027).
In France’s civil register
France’s register of deaths holds 475 people named Klotz.
33 of them were born outside France. Those born in France came from 31 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
251 people named Klotz live in Switzerland.
They live in 14 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/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In Poland’s population register
109 people named Klotz have a registered home in Poland.
Of the 159 in Poland’s national register, these are the ones with a permanent address on file. They live in 9 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.
In Argentina’s national register
At least 46 people named Klotz 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 the Nordic population registers
49 people named Klotz 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
Klotz in American newspapers,
1925–1929.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 26,475 pages in all carry the name.
Who carried it
People named Klotz,
with a public archive behind them.
-
Stephan Klotz 1606–1668 · university teacher -
John Klotz d. 1999 · sailor
-
Gottfried Klotz 1622–1689
-
Matthias Klotz 1653–1743 · luthier
-
Georg Klotz 1687–1737 · musical instrument maker
-
Johann Karl Klotz 1709–1769 · musical instrument maker
Wikidata and Wikimedia Commons (CC0) · 8 lives in all are documented under this name.
Nearby in the index
Surnames next to Klotz.
- Klop 133 · U.S. census
- Klopfenstein 1,604 · U.S. census
- Klopp 2,073 · U.S. census
- Klos 2,479 · U.S. census
- Klosowski 708 · U.S. census
- Kloster 1,474 · U.S. census
- Klug 6,041 · U.S. census
- Klumpp 1,300 · U.S. census
- Kmiec 1,053 · U.S. census
- Kmieciak 266 · U.S. census
- Kmiecik 786 · U.S. census
- Knab 976 · U.S. census
When the index is not enough
This page says where Klotz 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.