Mihelčić families are Croats and they are mostly from Delnice area. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Zagreb.
About 660 people with faimily name Mihelčić live in Croatia today, in 310 households. There were 900 of them in the middle of the past century, and their number decreased by 30 percent. They are located in almost all Croatian counties, in 39 cities and 84 other places, mostly in Zagreb (120), Delnice (95), Rijeka (50), Virovitica (45), and in Lokve in Delnice area (25).