Most of the angry young people/beats went to Europe, Spain, France, etc. before returning to the states. Greenwich Village attained status on their return, but most were posers. They couldn't afford the rent there now. In the sixties it was the Haight and Berkley, college areas are great places to share political viewpoints and revolutionary ideas.
The Beats of Kerouac in San Fran hung out in North Beach.....look up City Lights Bookstore right on Columbus Ave. Also, around Berkely. And in New York, Greenich Village, like gardener said above. And in a lot of seedy places, like Skid Row of any city.