Hrastinski families are Croats and they are mostly from Zabok. In the past century, relatively most of Croatian residents bearing this family name were born in Zabok and Zagreb. In places Repovec and Martinišće in Zabok every fifth inhabitant had the family name Hrastinski.
Prevalence
About 300 people with faimily name Hrastinski live in Croatia today, in 120 households. There were 290 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties, in 8 cities and 21 other places, mostly in Zagreb (80), Repovec (35), Gubasevo (30), Tisanic Jarek (30), and in Martinisce (30).
Outside Croatia
Family name Hrastinski is present in four countries on two continents. The family name "Hrastinski " 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 few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.