Bossart surname: U.S. census count, rank and records | FamilyCrests

The Bossart surname

In the 2010 U.S. Census, 539 people carried this name — #40,554 among all U.S. surnames, about 1 in every 555,600 people counted. That is down 1% from 547 in 2000.

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In Switzerland’s population statistics

800 people named Bossart live in Switzerland.

They live in 22 of Switzerland’s 26 cantons, most of all in Lucerne.

Where it concentrates, on the map

Where they live today

Lucerne 161
St. Gallen 135
Zurich 117
Aargau 77
Bern 62
Thurgau 43
Fribourg 32
Geneva 26

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 280 people named Bossart.

15 of them were born outside France. Those born in France came from 26 départements, most often Pas-de-Calais.

Where it concentrates, on the map

Where they were born

Born outside France 15
Pas-de-Calais 120
Nord 63
Seine-Maritime 16
Paris 14
Allier 9
Haut-Rhin 8
Vosges 8
Yvelines 3

Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.

In Belgium’s population register

At least 67 people named Bossart 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 Hainaut.

Too few records to say where it concentrates region by region — these are plain counts, not shares.

Where they live today

Hainaut 60
Luxembourg Province 7

Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.

Who carried it

People named Bossart,
with a public archive behind them.

  • Karel Bossart
    Karel Bossart 1904–1975 · engineer
  • Joseph Bossart 1665–1748 · organ builder
  • Johann Jacob Bossart 1721– · naturalist
  • Heinrich Bossart 1857–1930 · politician
  • Thomas Bossart 1858–1923
  • Louis Bossart 1882– · physician

Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.

Nearby in the index

Surnames next to Bossart.

When the index is not enough

This page says where Bossart 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.

See what a volume holds
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