The Nielsen surname
In the 2000 U.S. Census, 41,007 people carried this name — #765 among all U.S. surnames, about 1 in every 6,580 people counted.
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In Switzerland’s population statistics
457 people named Nielsen live in Switzerland.
They live in 18 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 174 people named Nielsen.
Most of them — 105 — were born outside France. Those born in France came from 21 départements, most often Paris.
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 Poland’s population register
113 people named Nielsen have a registered home in Poland.
Of the 391 in Poland’s national register, these are the ones with a permanent address on file. They live in all 16 of Poland’s voivodeships, most of all in West Pomeranian.
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 Belgium’s population register
At least 79 people named Nielsen 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 Brussels-Capital.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
In print
Nielsen in American newspapers,
1908–1960.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 81,720 pages in all carry the name.
Who carried it
People named Nielsen,
with a public archive behind them.
-
Jacob Nielsen 1768–1822 · businessperson -
Henrik Christian Nielsen 1805–1885 · politician -
Nicolaus Johann Ernst Nielsen 1806–1883 · provost -
Frederik Nielsen 1809–1867 · non-fiction writer -
Julius Nielsen 1811–1891 · military officer
Wikidata and Wikimedia Commons (CC0) · 242 lives in all are documented under this name.
Nearby in the index
Surnames next to Nielsen.
- Nicot 124 · U.S. census
- Nicotra 682 · U.S. census
- Niederberger 269 · U.S. census
- Niederkorn 318 · U.S. census
- Niedzielski 640 · U.S. census
- Niel 376 · U.S. census
- Niemiec 2,271 · U.S. census
- Nier 445 · U.S. census
- Nierengarten 197 · U.S. census
- Nies 2,125 · U.S. census
- Niess 394 · U.S. census
- Nieto 18,817 · U.S. census
When the index is not enough
This page says where Nielsen 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.