Is September 9 a rare birthday? Very common
More common than every other date on the calendar.
September 9 in numbers
The odds, the star sign and the other dates that come with it.
Where September 9 ranks
From most common birthday to rarest, September 9 ranks in position #1, with 11,900 births a year. No other date is more common.
September 9 through the years
Where it ranked in the United States, year by year.
common
September 9 in other countries
September 9 is the most common birthday in the United States. It is among the 50 most common in 15 of the 26 other countries, and ranges from #3 in Malaysia to #220 in Argentina.
Malaysia
#3 of 366
1,545 births on an average September 9
DOSM, 2000–2022Belgium
#5 of 366
349 births on an average September 9
Statbel, 1992–2025Guatemala
#9 of 366
1,072 births on an average September 9
INE Guatemala, 2018–2024Costa Rica
#10 of 366
187 births on an average September 9
INEC Costa Rica, 2014–2024Germany
#11 of 366
2,268 births on an average September 9
Destatis, 2014–2025Mexico
#14 of 366
5,758 births on an average September 9
INEGI, 2017–2023Chile
#16 of 366
760 births on an average September 9
DEIS, 1990–2017Netherlands
#18 of 366
532 births on an average September 9
CBS, 1995–2025Portugal
#19 of 366
317 births on an average September 9
INE Portugal, 1980–2025England & Wales
#27 of 366
1,856 births on an average September 9
ONS, 1995–2025Philippines
#27 of 366
5,126 births on an average September 9
PSA, 2006–2024Peru
#38 of 366
1,268 births on an average September 9
INEI, 2019–2025Slovenia
#44 of 366
58 births on an average September 9
SURS, 2000–2025Switzerland
#45 of 366
231 births on an average September 9
FSO, 1969–2025Ecuador
#46 of 366
798 births on an average September 9
INEC, 2013–2023Japan
#52 of 366
2,921 births on an average September 9
e-Stat, 1996–2025Hungary
#69 of 366
339 births on an average September 9
KSH, 1970–2020Ireland
#87 of 366
172 births on an average September 9
CSO, 1980–2023France
#90 of 366
2,200 births on an average September 9
INSEE, 1998–2024Denmark
#99 of 366
172 births on an average September 9
Statistics Denmark, 2007–2025Finland
#105 of 366
145 births on an average September 9
Statistics Finland, 2010–2025Latvia
#111 of 366
55 births on an average September 9
CSB, 1996–2025New Zealand
#128 of 366
159 births on an average September 9
Stats NZ, 1980–2023Norway
#143 of 366
160 births on an average September 9
SSB, 2011–2025Brazil
#154 of 366
8,109 births on an average September 9
DATASUS, 1997–2024Argentina
#220 of 366
1,478 births on an average September 9
DEIS, 2018–2023
Famous people born on September 9
Ranked by how often people looked them up on Wikipedia last year.
Adam SandlerAmerican actor and comedian · born 1966
Michelle WilliamsAmerican actress · born 1980
Hugh GrantEnglish actor · born 1960
Luka ModrićCroatian footballer · born 1985
Akshay KumarIndian actor and film producer · born 1967
Kelsey AsbilleAmerican actress · born 1991
Michael BubléCanadian singer · born 1975
Colonel SandersAmerican entrepreneur · born 1890September against the other eleven
September 9 is the most common of the 30 days in September. All September birthdays.
September is the most common month of the year
An average September day sees 11,448 births in the United States. September is the busiest month, January the quietest.
Quick answers
How many babies are born on September 9?
About 11,900 a year in the United States. It was at its most common in 1999, when 14,540 babies were born and it ranked #1 of 365; at its rarest in 2001, with 8,184 births at #306.
Is September 9 a common birthday?
In the United States, September 9 is the most common of 366 dates, with about 11,900 births a year. That puts it among the more common birthdays.
What is the rarest September birthday?
In the United States, September 2: the 118th rarest of all 366 dates, with about 10,653 births a year. The most common September birthday is September 9, the most common of the year.
How precise is the ranking?
For September 9 the rank is stable. Only 5 dates sit within 1% of its count, so the order does not depend on which years you count. In the crowded middle, dozens of dates can sit within a single percent of each other.
Is September 9 rarer in other countries?
Yes, in all 26 other countries we hold daily records for. It is at its rarest in Argentina, at #220 of 366, and at its most common in Malaysia, at #3.
How this is counted
Every date is ranked by how many babies are born on it in the United States. Live births by day of birth from the CDC's National Center for Health Statistics, 1989–2024.
Updated October 2026