This Is the Most Common Birthday in the U.S.

If you were born on this date, then you share your birthday with thousands of other people.

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Who doesn't love their birthday? It's a whole special celebration just for you—or so you'd like to think. In reality, many other people were born on the same day as you. And some birthdays (and birth months) are much more common than you'd expect. Using the most recent decade-long data from the Social Security Administration and the Centers for Disease Control and Prevention (CDC)'s National Center for Health Statistics, the career research company Zippia created a heat map of the most popular birthdays. It turns out that, on average, more babies were born in September than any other month. (The holidays, which are nine months prior, must be a busy time for couples!) To find out which exact date of birth is the most common and how many people share your birthday, read on. And if you were born before the new millennium, you'll likely recognize these Photos That Kids Born After 2000 Will Never Understand.

20
August 29

Birthday party
Shutterstock

Average number of births per year: 11,924

And for more throwback phrases you wish were still cool, check out the Slang Terms From the 20th Century No One Uses Anymore.

19
December 19

older man and woman celebrating 91st birthday
Shutterstock/Julio-FotoVideo

Average number of births per year: 11,935

18
July 8

Woman welcoming guest on her birthday dinner party and receiving gifts
iStock

Average number of births per year: 11,944

And for more fun memories from decades past, check out The Best Slang Terms From the 1990s That Aren't Cool Today.

17
September 24

five kids around a birthday cake
Shutterstock

Average number of births per year: 11,945

16
August 8

Woman blowing out candle at birthday
Shutterstock

Average number of births per year: 11,951

15
December 29

40th birthday balloons
Shutterstock

Average number of births per year: 11,956

14
September 23

Happy black man celebrating his birthday, looking at cake with candles, surrounded by friends
iStock

Average number of births per year: 11,974

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13
September 8

birthday cupcake
Shutterstock

Average number of births per year: 11,992

12
September 26

Beautiful young woman blowing candles on cake at dining table. Females are celebrating birthday party of friend. They are at home.
iStock

Average number of births per year: 11,993

11
December 20

Family celebrating birthday party
Shutterstock

Average number of births per year: 12,009

10
September 18

work birthday party selfie photo
iStock

Average number of births per year: 12,055

9
September 16

black father holding newborn baby on chest
Shutterstock/Monkey Business Images

Average number of births per year: 12,072

8
September 15

Large family gathering to celebrate a birthday
Shutterstock

Average number of births per year: 12,087

7
September 20

Coworker being kind and giving colleague a birthday donut
Shutterstock

Average number of births per year: 12,107

6
July 7

people celebrating a birthday
Shutterstock

Average number of births per year: 12,108

5
September 10

birthday cake on a platter
Shutterstock

Average number of births per year: 12,143

4
September 17

Newborn baby in a crib
Shutterstock

Average number of births per year: 12,148

3
September 12

Older man celebrating his 70th birthday looking confused or sad
Shutterstock

Average number of births per year: 12,224

2
September 19

birthday cake
Shutterstock

Average number of births per year: 12,229

1
September 9

woman in white sweater holding newborn baby
Shutterstock/Trendsetter Images

Average number of births per year: 12,301

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