The Karst surname
In the 2010 U.S. Census, 1,958 people carried this name — #15,066 among all U.S. surnames, about 1 in every 151,500 people counted. That is up 11% from 1,767 in 2000.
In France’s civil register
France’s register of deaths holds 253 people named Karst.
24 of them were born outside France. Those born in France came from 19 départements, most often Moselle.
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 Argentina’s national register
At least 113 people named Karst 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 Entre Ríos.
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
107 people named Karst have a registered home in Poland.
Of the 127 in Poland’s national register, these are the ones with a permanent address on file. They live in 8 of Poland’s 16 voivodeships, most of all in Lower Silesian.
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 Switzerland’s population statistics
21 people named Karst live in Switzerland.
They live in 5 of Switzerland’s 26 cantons, most of all in Graubünden.
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/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In print
Karst in American newspapers,
1898–1928.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 8,108 pages in all carry the name.
Who carried it
People named Karst,
with a public archive behind them.
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Josef Karst 1871–1962 · university teacher -
John Karst 1893–1976 · baseball player -
Adolph Karst 1815–1868 · illustrator
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Josef Karst 1881–1940
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Robert Karst 1883–1940
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Raymond W. Karst 1902–1987 · judge
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Karst.
- Karolczak 114 · U.S. census
- Karolewicz 142 · U.S. census
- Karp 5,577 · U.S. census
- Karpinski 2,731 · U.S. census
- Karr 10,324 · U.S. census
- Karrer 605 · U.S. census
- Kasbarian 173 · U.S. census
- Kaspar 1,954 · U.S. census
- Kasparian 790 · U.S. census
- Kasper 10,064 · U.S. census
- Kasperski 477 · U.S. census
- Kasprzak 1,455 · U.S. census
When the index is not enough
This page says where Karst 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.