The Tomaszewski surname
In the 2010 U.S. Census, 3,579 people carried this name — #9,123 among all U.S. surnames, about 1 in every 82,600 people counted. That is down 3% from 3,677 in 2000.
Where the name comes from
The origin of the Tomaszewski surname
A surname from Polish.
Borrowed from Polish Tomaszewski.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Tomaszewski» (Portuguese), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Poland’s population register
35,334 people named Tomaszewski have a registered home in Poland.
Of the 39,098 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 Masovian.
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 France’s civil register
France’s register of deaths holds 384 people named Tomaszewski.
99 of them were born outside France. Those born in France came from 34 départements, most often Pas-de-Calais.
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 Switzerland’s population statistics
26 people named Tomaszewski live in Switzerland.
They live in 5 of Switzerland’s 26 cantons, most of all in Zurich.
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 Argentina’s national register
At least 21 people named Tomaszewski 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
90 people named Tomaszewski is counted in Sweden.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published.
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).
In print
Tomaszewski in American newspapers,
1890–1955.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 3,321 pages in all carry the name.
Who carried it
People named Tomaszewski,
with a public archive behind them.
-
Walenty Maciej Tomaszewski 1781–1851 · Catholic priest -
Franciszek Tomaszewski 1852–1912 · teacher -
Stepan Tomashivsky 1875–1930 · politician -
Tadeusz Tomaszewski 1881–1950 · lawyer -
Jan Tomaszewski 1884–1967 · scientist
Wikidata and Wikimedia Commons (CC0) · 143 lives in all are documented under this name.
Nearby in the index
Surnames next to Tomaszewski.
- Tomasello 2,529 · U.S. census
- Tomasi 1,074 · U.S. census
- Tomasini 1,012 · U.S. census
- Tomasino 627 · U.S. census
- Tomassi 659 · U.S. census
- Tomasso 700 · U.S. census
- Tomczak 2,566 · U.S. census
- Tomczyk 1,312 · U.S. census
- Tome 2,007 · U.S. census
- Tomei 1,045 · U.S. census
- Tomi 111 · U.S. census
- Tomic 726 · U.S. census
When the index is not enough
This page says where Tomaszewski 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.