The Koper surname
In the 2010 U.S. Census, 641 people carried this name — #35,147 among all U.S. surnames, about 1 in every 454,500 people counted. About the same as in 2000 (643).
In Poland’s population register
6,608 people named Koper have a registered home in Poland.
Of the 7,172 in Poland’s national register, these are the ones with a permanent address on file. They live in all 16 of Poland’s voivodeships, most of all in Masovian.
Where it concentrates, on the mapWhere they live today
PESEL register, Ministry of Digital Affairs of Poland (dane.gov.pl) — CC0 · living people by voivodeship of permanent residence, 20 January 2026.
In France’s civil register
France’s register of deaths holds 53 people named Koper.
20 of them were born outside France. Those born in France came from 13 départements, most often Pas-de-Calais.
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 Koper.
- Konrad 3,052 · U.S. census
- Konrath 670 · U.S. census
- Konte 178 · U.S. census
- Koob 1,139 · U.S. census
- Koos 926 · U.S. census
- Kopec 2,639 · U.S. census
- Kopf 2,415 · U.S. census
- Kopff 132 · U.S. census
- Kopp 11,175 · U.S. census
- Koppe 387 · U.S. census
- Koralewski 328 · U.S. census
- Korb 2,287 · U.S. census
When the index is not enough
This page says where Koper 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.