In Croatia, Dlouhy families are generally Croats (from Vrbovec area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Osijek.
Prevalence
About 10 people with faimily name Dlouhy live in Croatia today, in 6 households. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only four naselja i to in Zagreb (<5), Rijeka (<5), Osijek (<5), and in Cugovec in Vrbovec area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.