SANLIURFA, Turkey — American airstrikes on the Syrian city of Raqqa, the vaunted capital of the Islamic State’s self-proclaimed caliphate, have scattered its fighters and disrupted the harsh system they had imposed, residents and visitors there say. But they see no gratitude toward the United States.

Rather, they suggested in interviews, many people are angry at the Americans. Food and fuel prices in Raqqa have soared, power blackouts have prevailed, and order is now threatened by a vacuum of any authority.

For all their violence and intolerance toward disbelievers, the fighters of the Islamic State, also known as ISIS or ISIL, at least functioned as a government, providing basic services and some semblance of stability.

“People don’t want some outside power to attack,” Khalid Farhan, a Raqqa resident, said during a recent trip to Turkey.