The Calero surname
In the 2000 U.S. Census, 1,869 people carried this name — #14,604 among all U.S. surnames, about 1 in every 144,900 people counted.
In Switzerland’s population statistics
69 people named Calero live in Switzerland.
They live in 10 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 · names with fewer than 3 bearers in a canton are not published.
In France’s civil register
France’s register of deaths holds 66 people named Calero.
33 of them were born outside France. Those born in France came from 16 départements, most often Pyrénées-Orientales.
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.
Nearby in the index
Surnames next to Calero.
- Calcagno 1,593 · U.S. census
- Caldara 224 · U.S. census
- Calderara 134 · U.S. census
- Calderon 54,691 · U.S. census
- Calderoni 206 · U.S. census
- Calegari 220 · U.S. census
- Cales 1,731 · U.S. census
- Calgaro 148 · U.S. census
- Cali 2,546 · U.S. census
- Califano 759 · U.S. census
- Calin 217 · U.S. census
- Calis 171 · U.S. census
When the index is not enough
This page says where Calero 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.