The Hannon surname
In the 2010 U.S. Census, 11,893 people carried this name — #3,016 among all U.S. surnames, about 1 in every 24,800 people counted. That is up 3% from 11,578 in 2000.
What the name means
The meaning of the Hannon surname
Reduced Anglicized form of Irish Ó hAinchín (“descendant of Ainchín”), a personal name possibly related to Annach or, alternatively, a variant of ainghein (“unborn”). It could also be a variant form of Hannan or Hanahan.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Hannon» (English), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Ireland’s birth registers, 1890
Ireland registered 92 births for the Hannon name in 1890.
They were registered in all four provinces, most of all in Connacht. By the Registrar-General’s own method — births multiplied by 44.38 — that is about 4,100 people bearing the name in Ireland at the time. 48 of them were indexed under other spellings of the name. The Registrar-General’s note on the name: “Galway, Roscommon, Limerick, Cork, and Sligo.”
Where it concentrates, on the mapWhere 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 229 people named Hannon.
7 of them were born outside France. Those born in France came from 19 départements, most often Nord.
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 Belgium’s population register
At least 169 people named Hannon 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 Flemish Brabant.
Where it concentrates, on the mapWhere they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
In Switzerland’s population statistics
23 people named Hannon live in Switzerland.
They live in 4 of Switzerland’s 26 cantons, most of all in Vaud.
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
62 people named Hannon 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
Hannon in American newspapers,
1891–1914.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 73,915 pages in all carry the name.
Who carried it
People named Hannon,
with a public archive behind them.
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Théodore Hannon 1851–1916 · writer -
Édouard Hannon 1853–1931 · photographer -
Édouard Hannon 1854–1931 · photographer
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John Hannon d. 1779 · chocolatier
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Peter Hannon d. 2017
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John Hannon 1790–1835
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Hannon.
When the index is not enough
This page says where Hannon 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.