Lojen families are Croats and they are mostly from Klanjec area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Slavonski Brod. In Ivanić Košnički in Pregrada area every tenth inhabitant had the family name Lojen.
About 220 people with faimily name Lojen live in Croatia today, in 100 households. There were 310 of them in the middle of the past century, and their number decreased by 30 percent. They are located in the most of Croatian counties, in 15 cities and 21 other places, mostly in Zagreb (90), Kupinecki Kraljevec (25), Slavonski Brod (15), Gornji Skrnik in Klanjec area (10), and in Rijeka (<10).