The Jahn surname
In the 2010 U.S. Census, 4,850 people carried this name — #6,917 among all U.S. surnames, about 1 in every 61,000 people counted. That is up 2% from 4,770 in 2000.
Where the name comes from
The origin of the Jahn surname
Reduced from Johannes; as an Eastern German surname, also from Czech Jan, itself related to the former.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Jahn» (German), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Poland’s population register
439 people named Jahn have a registered home in Poland.
Of the 564 in Poland’s national register, these are the ones with a permanent address on file. They live in 13 of Poland’s 16 voivodeships, most of all in Pomeranian.
Where it concentrates, on the mapWhere 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
349 people named Jahn live in Switzerland.
They live in 16 of Switzerland’s 26 cantons, most of all in St. Gallen.
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 France’s civil register
France’s register of deaths holds 125 people named Jahn.
41 of them were born outside France. Those born in France came from 18 départements, most often Bas-Rhin.
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 Argentina’s national register
At least 83 people named Jahn 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
212 people named Jahn are counted in Sweden and Finland.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published. Finland counts its citizens, at home or abroad.
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) · Digital and Population Data Services Agency (DVV), Finland, surname statistics, August 2026 — CC BY 4.0.
In print
Jahn in American newspapers,
1895–1924.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 57,826 pages in all carry the name.
Who carried it
People named Jahn,
with a public archive behind them.
-
Johann Wilhelm Jan 1681–1725 · historian -
Friedrich Ludwig Jahn 1778–1853 · writer -
Otto Jahn 1813–1869 · composer -
Wilhelm Jahn 1835–1900 · actor -
Bedřich Jahn 1846–1917 · lawyer
Wikidata and Wikimedia Commons (CC0) · 129 lives in all are documented under this name.
Nearby in the index
Surnames next to Jahn.
- Jaffray 193 · U.S. census
- Jager 4,356 · U.S. census
- Jaggi 605 · U.S. census
- Jago 496 · U.S. census
- Jagodzinski 1,131 · U.S. census
- Jahan 1,386 · U.S. census
- Jaillet 266 · U.S. census
- Jaime 13,532 · U.S. census
- Jain 11,626 · U.S. census
- Jakob 912 · U.S. census
- Jakobs 199 · U.S. census
- Jakubczak 376 · U.S. census
When the index is not enough
This page says where Jahn 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.