Terihaj families are Croats and they are mostly from Samobor. In the past century, relatively most of Croatian residents bearing this family name were born in Samobor and Zagreb. In Klake in Samobor every sixth inhabitant had the family name Terihaj.
Prevalence
About 180 people with faimily name Terihaj live in Croatia today, in 80 households. There were 180 of them in the middle of the past century, and their number remains constant. They are located in 9 Croatian counties, in 13 cities and 21 other places, mostly in Samobor (40), Klake (40), Zagreb (15), Rezovac (10), and in Sveti Martin Pod Okicem (10).
Outside Croatia
Family name Terihaj is present in four countries on two continents. The family name "Terihaj " is used by few people in the United States. "Terihay " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.