As a result of the racial and economic segregation of Cook County neighborhoods, life expectancy varies along neighborhood lines, according to a study by The Joint Center for Political and Economic Studies. The study found that residents of neighborhoods with an annual median income above $53,000 live almost 14 years longer than those with median incomes below $25,000. Those with lower income tend to live in less safe neighborhoods with less access to fresh food and quality health care. Of course the segregation splits the city in half. The census statistics also showed that more than a quarter of Cook County census tracts have experienced persistent poverty, "meaning that at least 20% of households have been in poverty for two decades.
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