Korean surname · 2015 census
고 Ko
This page reports historical census evidence for the surname. Romanization is a navigation aid and may differ from an individual family’s preferred Latin spelling.
Date and evidence boundary
The population figure is from the 2015 Population and Housing Census. This page does not estimate the surname’s present-day population, and it does not infer a person’s ancestry from a surname alone.
Bon-gwan
Browse bon-gwan →Ko clan groups in the census corpus
Bon-gwan counts are historical census rows tied to this surname/Hanja combination. Only groups meeting the current public threshold are linked here.
제주 Ko clan310,542 people · 65.88% of this surname count장흥 Ko clan75,517 people · 16.02% of this surname count장택 Ko clan38,539 people · 8.18% of this surname count개성 Ko clan18,247 people · 3.87% of this surname count횡성 Ko clan9,996 people · 2.12% of this surname count청주 Ko clan6,300 people · 1.34% of this surname count안동 Ko clan2,279 people · 0.48% of this surname count창평 Ko clan903 people · 0.19% of this surname count