USA by the Numbers: 40 Key Statistical Insights

Of all Americans, 37% have never left their hometown, and 57% have never left their native state, with the exceptions of education and military service.

As many as 49% of Americans suffer from parallelophobia, or the fear of parallel parking. Only about half (53 percent, to be exact) feel confident in their ability to parallel park.

An estimated 36 million people in the United States are toothless. It is largely influenced by the fact that 30% of Americans do not wash their teeth twice daily, and 2% do not brush at all. Their tooth loss is exacerbated by factors such as their diet, getting older, and avoiding the dentist.

About 2 million Americans can trace their ancestry back to a passenger on the Mayflower who fell overboard and survived by clinging to a trailing rope.

During the past two decades, thousands of retired Russian nuclear warheads have provided 10% of the electricity used in the United States.

Inflation-adjusted CEO pay in the United States rose 937 percent from 1978 to 2013, while the average worker's wages gained only 10 percent during the same time period.

The top 10% of drinkers in the United States consume an average of 74 drinks each week, making them the heaviest drinkers. Roughly 30% of Americans never drink, and another 30% drink only occasionally, no more than once every two weeks.

Americans are typically more confident than Britons regarding which animals they believe they can beat in an unarmed fight. Eight percent of Americans believe they can take out an elephant if they have to.

The majority of retired NBA players (60%) go bankrupt after five years of retirement, according to a 2009 Sports Illustrated study. The study also found that 78% of former NFL players had filed for bankruptcy or were experiencing financial hardship two years after retirement.

The average annual snowfall in Syracuse, New York, which is commonly called the snowiest city in the United States, is 117 inches. Sapporo, located on Hokkaido, Japan's northernmost island, receives an average of 235 inches of snow annually, making it the snowiest city in Japan with a population of over one million.