Happy birthday to you and you and you: Why Sept. 9 is the most common birthday (2024)

The most common birthday in the United States, according to data collected over two decades, is September 9.

That's right, it's the real labor day!

What is the most common birthday?

More babies have been born on Sept. 9 than any other day of the year,according to data compiled by statistician Nate Silver’s site, FiveThirtyEight, based on registered births in the U.S. from 1994 to 2014.

Counting backwards, that puts the most popular date of conception around November-December — a nice time to snuggle up together under the covers as the temperatures drop outside.

Happy birthday to you and you and you: Why Sept. 9 is the most common birthday (1)

A less scientific metric is the sheer volume of famous people born on this date.

Celebrities born on September 9

Four-time Oscar nominee Michelle Williams (1980) and three-time Razzie winner Adam Sandler (1966) share the birthday.

Happy birthday to you and you and you: Why Sept. 9 is the most common birthday (2)

So do British actor Hugh Grant (1960), American actor and comedian Bill Murray (1950), "Modern Family" actor Eric Stonestreet (1951) and Canadian crooner Michael Bublé (1975).

Happy birthday to you and you and you: Why Sept. 9 is the most common birthday (3)

There are enough sports figures to fill an All-Star-caliber birthday party.

Among them, Cleveland Cavaliers star J.R. Smith (1985) and Super Bowl-winning quarterback Joe Theismann (1949) were born on Sept. 9.

Legendary Russian author Leo Tolstoy (1828) and the late, great “(Sittin’ on) The Dock of the Bay” singer Otis Redding (1941) were also born on the esteemed date.

Happy birthday to you and you and you: Why Sept. 9 is the most common birthday (4)

And the real secret recipe behind Kentucky Fried Chicken? Whatever aphrodisiac Colonel Sanders’ father fed to his mother nine months before September 9, 1890, when KFC founder Harland Sanders was born.

Sept. 9 astrological sign

People born on Sept. 9 have the astrological sun sign of Virgo, just like Beyoncé, whose Sept. 4 birthday puts her once again ahead of the trend.

Typical traits of Virgos include attention to details, a patient attitude and a gentle spirit. The ability to share their birthday is a plus!

This story was originally published on Sept. 9, 2017, and has been updated.

Happy birthday to you and you and you: Why Sept. 9 is the most common birthday (5)

Ethan Sacks

Happy birthday to you and you and you: Why Sept. 9 is the most common birthday (2024)

FAQs

Why is September 9 the most popular birthday? ›

This is the real labor day

Babies celebrating a birthday. The most common birthday in the United States, according to data collected over two decades, is September 9. That's right, it's the real labor day!

What is the most common birthday in September? ›

What the Data Says About the Most Common Birthdays
Top 10 Most Common Birthdays
RankDateU.S. Average Daily Births
1stSeptember 9 (9/9)12,301
2ndSeptember 19 (9/19)12,229
3rdSeptember 12 (9/12)12,224
7 more rows
Apr 24, 2024

How many people are born on September 9th? ›

Popular birthdays and names

The most popular day in the U.S. for birthdays is Sept. 9, where on average 12,301 babies were born. The least popular day for births is Jan. 1, with 7,792 babies born.

Why are most people born in sept? ›

This birth rate in September is likely affected by the increased level of sexual activity over holiday periods nine months before September, but is also due to seasonal changes in human fertility that reflect changes in temperature and weather.

How rare is my birthday September 9? ›

After analyzing birth data, researchers have found that September 9th emerges as one of the most common birthdays in the United States. This intriguing finding suggests a higher number of births around this date than any other time of the year.

Why is September 9th so important? ›

On this day, Washington, D.C. was named the capital of the United States, California was admitted the 31st state in the U.S., and Elizabeth II became the longest reigning monarch in the UK's history. Famous birthdays include Adam Sandler, Michelle Williams, and Hugh Grant.

What is the rarest birth month? ›

The data comes from the Centers for Disease Control and Prevention and the Social Security Administration. The rarest month to be born in is February, making Aquarius the rarest zodiac sign. February is the shortest month of the year, even with a leap year.

How special are September borns? ›

September babies may have long lives ahead of them.

September-ites are more likely to live to 100! Babies born from September to November have a higher chance of hitting the century-mark, perhaps from being protected through the first winter by all the great immunity in breastmilk.

What is September born called? ›

People born in September fall under two zodiac signs: Virgo and Libra. Those born until September 22 come under the Virgo sign and those born later come under the Libra sign. Just like every other month, those born in September have their own unique qualities which makes them different from others.

What birth star is September 9? ›

Virgos born on September 9 are perfectionists -- a fact that often makes their life difficult while infuriating everyone around them.

Is September 9 a special day? ›

It's International Sudoku Day, National Teddy Bear Day, Care Bears Share Your Care Day, Falsely Accused Day, Bonza Bottler Day… and much more!

What does being born on the 9th mean? ›

Number 9 represents the ruling planet Mars and people born on the 9th, 18th, and 27th of any month possess its qualities of ambition, confidence, stamina, and energy. They are down-to-earth and disciplined, but can also be aggressive, stubborn, and speak harshly.

Why is September 9th the most common birthday in the USA? ›

According to data collected over more than 20 years, the most common birthday is September 9, which just so happens to literally be Labor Day, depending on the year. Here's the thing though, the numbers aren't all that dramatically different than most other days.

Are September babies rare? ›

Despite the fact that September is so heavily represented in the top 10 most common birthdays, there are actually more births reported in August! All but one August birthday made the list of 100 most common birthdays (the exception being August 3, which lands at 116).

Who is the most famous person born in September 9? ›

1. Adam Sandler. Adam Richard Sandler was born September 9, 1966 in Brooklyn, New York, to Judith (Levine), a teacher at a nursery school, and Stanley Alan Sandler, an electrical engineer.

What's the rarest birthday? ›

What are the rarest birthdays?
  • February 29th: February 29th (Leap Day during Leap Year) is the rarest birthday with only a one in roughly 1,460 chance of being born on this date. ...
  • The second rarest birthday is Christmas Eve, December 24th.
  • Other uncommon birthdays include January 1st, December 25th, and January 2nd.
Feb 13, 2024

When were you conceived if you were born on September 9? ›

The conception date for babies born on Sept. 9 is roughly Dec. 17. Coming in second place for most popular birthdate was Sept.

Top Articles
Latest Posts
Article information

Author: Kieth Sipes

Last Updated:

Views: 6426

Rating: 4.7 / 5 (47 voted)

Reviews: 94% of readers found this page helpful

Author information

Name: Kieth Sipes

Birthday: 2001-04-14

Address: Suite 492 62479 Champlin Loop, South Catrice, MS 57271

Phone: +9663362133320

Job: District Sales Analyst

Hobby: Digital arts, Dance, Ghost hunting, Worldbuilding, Kayaking, Table tennis, 3D printing

Introduction: My name is Kieth Sipes, I am a zany, rich, courageous, powerful, faithful, jolly, excited person who loves writing and wants to share my knowledge and understanding with you.