The Watt surname
In the 2010 U.S. Census, 15,211 people carried this name — #2,387 among all U.S. surnames, about 1 in every 19,400 people counted. That is up 2% from 14,872 in 2000.
In Ireland’s birth registers, 1890
Ireland registered 33 births for the Watt name in 1890.
Most were registered in Ulster. By the Registrar-General’s own method — births multiplied by 44.38 — that is about 1,500 people bearing the name in Ireland at the time. The Registrar-General’s note on the name: “Antrim.”
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they were born, 1890
Registrar-General for Ireland, «Special Report on Surnames in Ireland» (R. E. Matheson, 1894), births index of 1890 — public domain.
In France’s civil register
France’s register of deaths holds 56 people named Watt.
28 of them were born outside France. Those born in France came from 11 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 Switzerland’s population statistics
21 people named Watt live in Switzerland.
They live in 4 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 the Nordic population registers
22 people named Watt 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
Watt in American newspapers,
1905–1918.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 1,087,556 pages in all carry the name.
Who carried it
People named Watt,
with a public archive behind them.
-
Flora Margaret Watt d. 1885
-
Mary Watt d. 1826
-
Millicent Watt d. 2005
-
Grace Watt d. 1868
-
Elinor Mary Watt d. 1955
-
Herbert Tyrone Watt d. 2007
Wikidata (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Watt.
- Wasson 8,471 · U.S. census
- Waszak 682 · U.S. census
- Watier 103 · U.S. census
- Watkins 127,083 · U.S. census
- Watrin 139 · U.S. census
- Watson 252,579 · U.S. census
- Watte 138 · U.S. census
- Wattier 354 · U.S. census
- Watts 89,649 · U.S. census
- Wauters 459 · U.S. census
- Wawrzyniak 1,093 · U.S. census
- Wax 1,838 · U.S. census
When the index is not enough
This page says where Watt 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.