ST. JOHNS COUNTY, Fla. — This prosperous community is the picture of the good and ever longer life — just what policy makers have in mind when they say that raising the eligibility age for Social Security and Medicare is a fair way to rein in the nation’s troublesome debt.
The county’s plentiful and well-tended golf courses teem with youthful-looking retirees. The same is true on the county’s 41 miles of Atlantic Ocean beaches, abundant tennis courts, and extensive network of biking and hiking trails.
The healthy lifestyles pay off. Women here can expect to live to be nearly 83, four years longer than they did just two decades earlier, according to research at the University of Washington. Male life expectancy is more than 78 years, six years longer than two decades ago.
But in neighboring Putnam County, life is neither as idyllic nor as long.
Incomes and housing values are about half what they are in St. Johns. And life expectancy in Putnam has barely budged since 1989, rising less than a year for women to just over 78. Meanwhile, it has crept up by a year and a half for men, who can expect to live to be just over 71, seven years less than the men living a few miles away in St. Johns.
The widening gap in life expectancy between these two adjacent Florida counties reflects perhaps the starkest outcome of the nation’s growing economic inequality: Even as the nation’s life expectancy has marched steadily upward, reaching 78.5 years in 2009, a growing body of research shows that those gains are going mostly to those at the upper end of the income ladder.
The tightening economic connection to longevity has profound implications for the simmering debate about trimming the nation’s entitlement programs. Citing rising life expectancy, influential voices including the Simpson-Bowles deficit reduction commission, the Business Roundtable, and lawmakers on both sides of the aisle have argued that it makes sense to raise the eligibility age for Social Security and Medicare.
But raising the eligibility ages — currently 65 for Medicare and moving toward 67 for full Social Security benefits — would mean fewer benefits for lower-income workers, who typically die younger than those who make more.
‘‘People who are shorter-lived tend to make less, which means that if you raise the retirement age, low-income populations would be subsidizing the lives of higher-income people,’’ said Maya Rockeymoore, president and chief executive of Global Policy Solutions, a public policy consultancy.
‘‘Whenever I hear a policy maker say people are living longer as a justification for raising the retirement age, I immediately think they don’t understand the research or, worse, they are willfully ignoring what the data say,’’ she said.
A Social Security Administration study several years ago found that the life expectancy of male workers retiring at 65 had risen six years in the top half of the income distribution, but only 1.3 years in the bottom half over the previous three decades.
In 1980, life expectancy at birth was 2.8 years longer for the highest socioeconomic group defined in a research study than the lowest, according to a report by the Congressional Budget Office. By 2000, the gap had grown to 4.5 years.
‘‘Life expectancy has increased mainly among the privileged class,’’ said Monique Morrissey, an economist who focuses on retirement issues at the Economic Policy Institute, a liberal-leaning research organization. ‘‘For many people, raising the retirement age would amount to a significant benefit cut.’’
Advocates of raising the retirement age say only a relative handful of older workers would be harmed and that the vulnerable could be protected by enacting hardship exemptions. Meanwhile, they say, with a wave of baby boomers moving toward retirement and health-care costs always on the rise, the retirement programs are sustainable only if people are willing to pay higher taxes or accept fewer benefits.
Overall, life expectancy has improved substantially since the first Social Security payments were issued in 1940. Then, a man who made it to 65 could expect to live 12.7 years, compared with 18.6 years in 2010. A woman won turned 65 in 2010 could expect to live 20.7 more years, compared with 14.7 in 1940.
That growth helped persuade lawmakers in 1983 to slowly move the age people could receive full Social Security benefits from 65 to 67, a change that will be complete in 2027.