The Kalai surname
In the 2010 U.S. Census, 169 people carried this name — #105,600 among all U.S. surnames, about 1 in every 1,666,700 people counted. That is up 7% from 158 in 2000.
In France’s civil register
France’s register of deaths holds 64 people named Kalai.
Most of them — 40 — were born outside France. Those born in France came from 12 départements, most often Seine-Saint-Denis.
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 25 people named Kalai 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 Brussels-Capital.
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
23 people named Kalai live in Switzerland.
They live in 5 of Switzerland’s 26 cantons, most of all in Bern.
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.
Who carried it
People named Kalai,
with a public archive behind them.
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Gil Kalai 1955– · computer scientist
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Iosif Kalai 1980– · association football player
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Eddy Kalai 1982–
Wikidata (CC0).
Nearby in the index
Surnames next to Kalai.
- Kahn 14,584 · U.S. census
- Kaid 557 · U.S. census
- Kail 1,940 · U.S. census
- Kaim 336 · U.S. census
- Kaiser 33,480 · U.S. census
- Kaizer 291 · U.S. census
- Kalanquin 111 · U.S. census
- Kalaydjian 167 · U.S. census
- Kalb 2,853 · U.S. census
- Kaleta 909 · U.S. census
- Kali 287 · U.S. census
- Kalinowski 3,951 · U.S. census
When the index is not enough
This page says where Kalai 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.