The Oser surname
In the 2000 U.S. Census, 1,155 people carried this name — #21,176 among all U.S. surnames, about 1 in every 232,600 people counted.
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In Switzerland’s population statistics
430 people named Oser live in Switzerland.
They live in 12 of Switzerland’s 26 cantons, most of all in Basel-Landschaft.
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 France’s civil register
France’s register of deaths holds 132 people named Oser.
14 of them were born outside France. Those born in France came from 10 départements, most often Haut-Rhin.
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 Oser.
- Ortuno 1,170 · U.S. census
- Orville 119 · U.S. census
- Ory 635 · U.S. census
- Orzechowski 1,547 · U.S. census
- Oscar 1,417 · U.S. census
- Osche 188 · U.S. census
- Oses 162 · U.S. census
- Osinski 1,209 · U.S. census
- Osman 6,017 · U.S. census
- Osmani 485 · U.S. census
- Osmond 1,262 · U.S. census
- Ossola 163 · U.S. census
When the index is not enough
This page says where Oser 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.