As I remember it, the fifties culture lasted until at least 1965, here in an eccentric SoCal beach town full of beatniks. Even later in small towns across America. The hippie antiwar movement was a small cult until 1967 or so, and then only in cities and college towns. When Cronkite urged the antiwar movement forward after Tet, things changed in a hurry.
You must be referring to Surf City! aka Huntington Beach, CA. This is where the old beatnik culture, the surfing culture and the LSD culture met.
The beatniks were firmly entrenched in old Tin Can Beach, a bohemian enclave just south of Huntington Beach where bohemians lived rent-free in improvised shacks made of driftwood, plywood, and... tin cans.
The surfers were already there, from Malibu down to San Diego. But HB was the favorite spot, where you could 'shoot the pier' (long ago outlawed).
Finally, the legendary Brotherhood of Eternal Love was headquartered in Laguna Beach. They manufactured and sold or gave away millions of hits of orange sunshine to Marines from Camp Pendleton to surfers already turned on to grass, to kids from the suburbs out for a weekend adventure.
Then the political types (red diaper Marxist youth) were always present, trying to steer the diverse, unorganized counter-cultures into a unified political movement. They were centered in Berkeley (read Radical Son by David Horowitz).
It all ended with the end of the Viet Nam war, the drug busts of Tim Leary and many in the Brotherhood, their Mystic Arts World bookstore was busted for drug dealing, then myteriously burned down. Many in the various movements got real jobs, while the more dissolute got deeper into drugs like cocaine and meth and self-destructed. The hippie movement was over and the 'ME' generation took over. Reagan got elected President in 1980, whose chief legal counsel, Ed Meese, was largely responsible for dismantling the Black Panthers. It was Morning In America again.