According to Gallup, worries about health care bills fell "substantially" in the recession that followed the financial crisis, with people focused on other financial woes—among them lack of money, low wages, unemployment and higher gas prices.

But in 2009 and 2010, as the debate over the ACA escalated, worries over the price of health care once again rose toward the top of the heap, hitting 15 percent a short while after the ACA was signed into law in April of 2010. (It dropped back to 10 percent later that year, however.)

While its level fluctuated between 12–14 percent during the next couple of years, it dropped to 10 percent in 2013 as additional ACA provisions were put into action.

But in 2014, worry levels stated to rise again, and this year's 17 percent is the highest it's been since October of 2007.

Of course, health care costs aren't the only financial woes people cite in the poll.

High debt levels came in second, with 11 percent of respondents saying they owe too much or don't have enough money to pay their debts.

After that come lack of money/low wages, at 10 percent; college expenses, at 10 percent; the cost of owning/renting a home, at 9 percent; the high cost of living/inflation, at 8 percent; retirement savings, at 6 percent; taxes, at 5 percent; unemployment/loss of a job, at 3 percent; Social Security, at 3 percent; and lack of savings, at 2 percent.

Worry over debt levels, says Gallup, are on a par with post-recession responses, and college expense worries, too, are staying at a pretty constant level—not falling—as the problem of student loan debt gains greater prominence.