Jandroković families are Croats and they are mostly from Bjelovar. In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Krizevci.
Prevalence
About 150 people with faimily name Jandroković live in Croatia today, in 60 households. There were 250 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 8 Croatian counties, in 12 cities and 19 other places, mostly in Bjelovar (25), Zagreb (20), Ciglena (10), Veliki Potocec (<10), and in Novi Pavljani (<10).
Outside Croatia
Family name Jandroković is present in 6 countries on three continents. The family name "Jandrokovic " is used by some 100 people in Afghanistan , about 80 in the United States , and small number of people in Austria.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.