The Jacobi surname
In the 2010 U.S. Census, 3,563 people carried this name — #9,161 among all U.S. surnames, about 1 in every 82,600 people counted. That is up 3% from 3,443 in 2000.
In Argentina’s national register
At least 1,009 people named Jacobi 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.
Where it concentrates, on the mapWhere they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In Switzerland’s population statistics
211 people named Jacobi live in Switzerland.
They live in 15 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 France’s civil register
France’s register of deaths holds 176 people named Jacobi.
25 of them were born outside France. Those born in France came from 27 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 Poland’s population register
38 people named Jacobi have a registered home in Poland.
Of the 88 in Poland’s national register, these are the ones with a permanent address on file. They live in 3 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 Jacobi.
- Jackowski 1,422 · U.S. census
- Jackson 708,099 · U.S. census
- Jacky 304 · U.S. census
- Jacob 24,688 · U.S. census
- Jacobe 519 · U.S. census
- Jacobelli 161 · U.S. census
- Jacobs 118,614 · U.S. census
- Jacobson 44,808 · U.S. census
- Jacoby 9,372 · U.S. census
- Jacomet 229 · U.S. census
- Jacomino 177 · U.S. census
- Jacot 670 · U.S. census
When the index is not enough
This page says where Jacobi 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.