De-facto marital status of people of 15 or older, whether there is a record in family register or resident registration or not (1) Unmarried: never married (2) Married: married and has a spouse (3) Widow/widower: those who lost their spouse by death and have not remarried (4) Divorced: those living alone by divorce and have not remarried
Source
KOSTAT (Social Survey, Population and Housing Census)