The Ona surname
In the 2010 U.S. Census, 584 people carried this name — #37,993 among all U.S. surnames, about 1 in every 500,000 people counted. That is up 52% from 385 in 2000.
In Argentina’s national register
At least 1,166 people named Ona 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 82 people named Ona.
Most of them — 45 — were born outside France. Those born in France came from 9 départements, most often Hauts-de-Seine.
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 Switzerland’s population statistics
28 people named Ona live in Switzerland.
They live in 3 of Switzerland’s 26 cantons, most of all in Geneva.
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.
Nearby in the index
Surnames next to Ona.
- Olszewski 5,554 · U.S. census
- Oltz 237 · U.S. census
- Omar 7,660 · U.S. census
- Omari 595 · U.S. census
- Omer 2,063 · U.S. census
- Oms 164 · U.S. census
- Ong 9,584 · U.S. census
- Ongaro 262 · U.S. census
- Onorato 1,913 · U.S. census
- Opfermann 110 · U.S. census
- Oppenheim 1,795 · U.S. census
- Oppermann 727 · U.S. census
When the index is not enough
This page says where Ona 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.