Ječmenica families are mainly Croats and they are mostly from Zlatar area , often Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zlatar area and in Grubisno Polje. In Mala Dapčevica in Grubisno Polje every sixth inhabitant had the family name Ječmenica.
Prevalence
About 80 people with faimily name Ječmenica live in Croatia today, in 40 households. There were 210 of them in the middle of the past century, and their number decreased significantly. They are located in the most of Croatian counties, in 10 cities and 10 other places, mostly in Zagreb (20), Vukanci in Zlatar area (15), Rijeka (10), Veliki Zdenci (<10), and in Varazdin (<10).
Outside Croatia
Family name Ječmenica is present in 8 countries on two continents. The family name "Jecmenica " 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 2007 in source Encyclopaedia of Croatian Surnames.