Can't find any long lasting ones. For example, hippie communes were common in the 60's and 70's. They've all vanished. The largest, San Francisco's 1967 "summer of love", only lasted a few months before collapsing.
"those who gathered in Haight-Ashbury during 1967 allegedly rejected the conformist and materialist values of modern life; there was an emphasis on sharing and community. The Diggers established a Free Store, and a Free Clinic where medical treatment was provided."