The Cairo surname
In the 2010 U.S. Census, 1,734 people carried this name — #16,555 among all U.S. surnames, about 1 in every 169,500 people counted. That is up 1% from 1,722 in 2000.
In Argentina’s national register
At least 1,363 people named Cairo live in Argentina.
RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Buenos Aires Province.
Where it concentrates, on the mapWhere they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In France’s civil register
France’s register of deaths holds 124 people named Cairo.
7 of them were born outside France. Those born in France came from 10 départements, most often Guadeloupe.
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 Belgium’s population register
At least 29 people named Cairo 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 Limburg.
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.
In Switzerland’s population statistics
26 people named Cairo live in Switzerland.
They live in 3 of Switzerland’s 26 cantons, most of all in Ticino.
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 print
Cairo in American newspapers,
1913–1922.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 555,064 pages in all carry the name.
Who carried it
People named Cairo,
with a public archive behind them.
-
Francesco Cairo 1607–1665 · painter -
Nilo Cairo 1874–1928 · physician -
Edgar Cairo 1948–2000 · writer -
Humberto Cairo 1850–1945 · businessperson
-
Fabrizio Cairo 1857– · engraver
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Giovanni Cairo 1866–1925 · writer
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Cairo.
- Caillet 176 · U.S. census
- Caillier 522 · U.S. census
- Caillouet 630 · U.S. census
- Cain 60,948 · U.S. census
- Caira 369 · U.S. census
- Caire 423 · U.S. census
- Caisse 775 · U.S. census
- Cakir 250 · U.S. census
- Cal 634 · U.S. census
- Cala 1,011 · U.S. census
- Calabrese 8,599 · U.S. census
- Calabria 1,118 · U.S. census
When the index is not enough
This page says where Cairo 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.