PARIS — The massacre Friday night by militants wielding assault rifles provoked an eerie and disturbing sense of familiarity for all of France. But that feeling was even more profound for one quickly gentrifying, multicultural neighborhood of Paris known for its “bourgeois bonhomie” — the 11th Arrondissement.

At least five of the attacks took place here, some just blocks from where the satirical newspaper Charlie Hebdo was hit in January.

The concentration of deaths in a single neighborhood, comparable in scale and sensibility to the East Village of Manhattan, has left this tightly knit corner of Paris, filled with young families and friends, in shock and mourning, like the rest of the nation.