The Opportunity Index found an estimated 5.8 million "disconnected" youth in the United States, a number that has not changed in three years, said the report released by Opportunity Nation.
The bipartisan campaign is composed of more than 275 groups dedicated to closing economic gaps. The index, which studies the economic situation in more than 3,000 counties, "measures the climate for upward mobility across the country," the campaign said.
Developed by Measure of America and Opportunity Nation, the index drops as youth "disconnection" and poverty rise.
"The index shows the interconnected conditions present in America's communities that impact upward mobility and access to opportunity," said Kristen Lewis, co-director of Measure of America.
Established in 2011, the index found a 2.6 percent increase in "opportunity scores" across the United States, but said that where a person is born still largely determines their chances of success.
This year's index ranked Vermont as the state with the greatest chance of economic success. Nevada ranked last for the third year in a row.
Some 26 states improved their "opportunity scores," while the rest showed declines or no improvement since 2011. Some 49 states reported increases in poverty levels in the past three years, while 46 states had a drop in median household income this year.
"The data discredits the widely held belief that Americans have equal opportunities across the country to climb the proverbial economic ladder," said Mark Edwards, executive director of Opportunity Nation.
The study found low-income children born in Canada and a dozen European countries stand a better chance of improving their lot in life than low-income children born in the United States.
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