Two-thirds of Americans are satisfied with the country's health care system, according to a new Gallup poll.

Levels of satisfaction were determined largely by whether those surveyed had health insurance: 72 percent of people with insurance said they're happy with the health care system while 26 percent of them said they aren't. Among those without it, 33 percent are satisfied and 59 percent are dissatisfied.

Gallup also found the young and the old are the two demographics most satisfied with the country's health care system. Though young people are less likely to have insurance, 73 percent said they're satisfied with the system. That high satisfaction most likely is attributable to the group's overall healthy status as well as lower premiums to pay if they don't have families, Gallup said.