In Croatia, Gajer families are generally Croats (from Nasice area ), very rarely Hungarians (from Osijek ), and barely Germans (from Beli Manastir ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Osijek.
Prevalence
About 60 people with faimily name Gajer live in Croatia today, in 30 households. There were 130 of them in the middle of the past century, and their number halved. They are located in 8 Croatian counties, in 10 cities and 6 other places, mostly in Zagreb (20), Pozega (<10), Djakovo (<10), Beli Manastir (<10), and in Slatina (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1750 in source 18th Century Census.