- In the US October 5th is the most common birthday and
- May 22nd is the least common (after February 29th of course).
- More people have birthdays in August than in any other month – 9.06 percent of the U.S. population.
- July is the second most popular birthday month (8.80 percent) and
- the fewest people celebrate in February (7.55 percent).
Just what you wanted to know about birthdays, huh?