The Alfonso surname
In the 2000 U.S. Census, 9,632 people carried this name — #3,404 among all U.S. surnames, about 1 in every 28,000 people counted.
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In France’s civil register
France’s register of deaths holds 327 people named Alfonso.
156 of them were born outside France. Those born in France came from 44 départements, most often Hérault.
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
152 people named Alfonso live in Switzerland.
They live in 13 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 Belgium’s population register
At least 29 people named Alfonso 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 Liège.
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.
Nearby in the index
Surnames next to Alfonso.
- Alexanian 384 · U.S. census
- Alexis 4,991 · U.S. census
- Alfano 4,588 · U.S. census
- Alfaro 24,108 · U.S. census
- Alfieri 2,053 · U.S. census
- Alfonsi 375 · U.S. census
- Alfred 5,682 · U.S. census
- Alger 6,047 · U.S. census
- Ali 36,079 · U.S. census
- Alia 480 · U.S. census
- Aliaga 648 · U.S. census
- Alias 269 · U.S. census
When the index is not enough
This page says where Alfonso 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.