That would place Sanders — whose website says that "the issue of wealth and income inequality is the great moral issue of our time, it is the great economic issue of our time, and it is the great political issue of our time" — in the unusual position of being among the top 1 percent of earners in the U.S.

Vermont Sen. Bernie Sanders had a surprisingly good financial year in 2016. While the Democratic socialist was warning against the concentration of wealth in the hands of " the top 1 percent ," he was also joining their ranks.

Just how much do you have to pull in to join the champion of the working class in the 1 percent club?

According to a 2013 Economic Policy Institute report, "a family needs an income of $389,436." In affluent metropolitan areas, however, the threshold is much higher. In New York City, for example, you need an annual income of $672,795 to be in the 1 percent. In San Francisco, it's $785,946.

Keep in mind that these numbers just represent the threshold — the average income of the top 1 percent nationwide is $1.15 million.

People in the rest of the nation, on the other hand, earn an average of $45,567 a year. That means, in 2013, "the top 1 percent of families earned 25.3 times as much income as the bottom 99 percent," the EPI reports.

Don't miss: Here's how much you have to earn to be considered upper class