Perhaps Indian reservations are not the best example?

Meanwhile, on Pine Ridge, three and four families live in single-family houses, eight to nine out of 10 people are out of work, and more than half the population, helpless against disconnect notices, has no phone in any given month.

...

Life expectancy on the reservation is 47 to 56 years, the nation's lowest. Infant mortality is twice the rate of the rest of the country. Diabetes afflicts about half the population, and people here talk about their blood sugar levels the way other Americans mention their cholesterol counts.

Alcoholism is rampant -- some figures place it at 80 percent of the population -- yet on a reservation about the size of Connecticut, there is no alcohol treatment center. The roadside crosses are too often the result of alcohol-fueled car accidents, which are nearly three times as common here as in the general population ...
Shannon County, SD quickfacts.