udeo-Kashani belongs to the Central Plateau Iranic language group spoken around Kashan, having outlived the rapid process of Persianization. Judeo-Kashani shows striking similarities to the dialects of Jewish communities in other cities, such as Hamadan and Isfahan, where the non-Jewish population today is Persian-speaking. There are few if any native Jews left in Kashan. Mass emigration to Tehran began in the mid-20th century, with most leaving having left for Israel or North America after the Iranian Revolution of 1979. California, sometimes called "Kāšifornia" by the community, especially Los Angeles, has been a primary destination, but there is a small concentration of Kashani Jews in suburban Great Neck and its vicinity in Long Island, numbering in the hundreds, although Judeo-Kashani is essentially no longer spoken, with Persian (and increasingly English) now dominant. According to 2015-2019 American Community Survey data, there are roughly 6,693 Persian speakers in Great Neck and surrounding towns, the overwhelming majority of whom are probably Jewish, and a small number of whom are probably speakers of these quite different languages spoken by regional Jewish communities in Iran. Read more here.