The Aguiar surname
In the 2000 U.S. Census, 7,027 people carried this name — #4,616 among all U.S. surnames, about 1 in every 38,500 people counted.
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In Switzerland’s population statistics
289 people named Aguiar live in Switzerland.
They live in 12 of Switzerland’s 26 cantons, most of all in Vaud.
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 86 people named Aguiar.
Most of them — 50 — were born outside France. Those born in France came from 11 départements, most often Pyrénées-Atlantiques.
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 print
Aguiar in American newspapers,
1904–1963.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 4,619 pages in all carry the name.
Who carried it
People named Aguiar,
with a public archive behind them.
-
Antonio de Aguilar 1555–1631 · Catholic bishop -
Francisco de Aguiar y Sejas 1632–1698 · Catholic priest -
Tomás de Aguiar 1650–1679 · painter -
Joaquim António de Aguiar 1792–1884 · military personnel -
Luís Henrique Ferreira de Aguiar 1812–1875
Wikidata and Wikimedia Commons (CC0) · 233 lives in all are documented under this name.
Nearby in the index
Surnames next to Aguiar.
- Agresti 525 · U.S. census
- Agron 544 · U.S. census
- Agu 269 · U.S. census
- Aguado 1,645 · U.S. census
- Aguero 4,776 · U.S. census
- Aguerre 130 · U.S. census
- Aguila 4,326 · U.S. census
- Aguilar 126,399 · U.S. census
- Aguilera 21,685 · U.S. census
- Aguillon 2,118 · U.S. census
- Aguilo 162 · U.S. census
- Aguirre 58,918 · U.S. census
When the index is not enough
This page says where Aguiar 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.