Zovko families are Croats and they are mostly from Herzegovina (according to some sources from larger area of Siroki Brijeg or Vinjani Gornji Posuski). In the past century, relatively most of Croatian residents bearing this family name were born in Herzegovina (Mostar area) and in Herzegovina (Siroki Brijeg area). In places Polog and Oklaji in Herzegovina every third inhabitant had the family name Zovko.
About 1600 people with faimily name Zovko live in Croatia today, in 650 households. There were 320 of them in the middle of the past century, and their number multiplied. They are located in almost all Croatian counties, in 61 cities and 134 other places, mostly in Zagreb (510), Split (130), Metkovic (95), Osijek (50), and in Sesvete (45).