About 70 people with faimily name Simoni live in Croatia today, in 30 households. There were 40 of them in the middle of the past century, and their number increased by 90 percent. They are located in 8 Croatian counties, in 9 cities and 9 other places, mostly in Blato on the Island of Korcula (25), Zagreb (<10), Korcula on the Island of Korcula (<10), Dubrovnik (<10), and in Mikleus in Orahovica area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.