Is September 4 a rare birthday? Ordinary
More common than 57% of all 366 dates.
September 4 in numbers
The odds, the star sign and the other dates that come with it.
Where September 4 ranks
From most common birthday to rarest, September 4 ranks in position #157, with 10,873 births a year. 209 other dates are rarer. 74 dates are within 1% of its count, anywhere from #125 to #199, so the exact position is a close thing.
September 4 through the years
Where it ranked in the United States, year by year.
common
September 4 in other countries
September 4 is the 157th most common birthday in the United States. It is among the 50 most common in 3 of the 26 other countries, and ranges from #20 in Mexico to #263 in Argentina and Switzerland.
Mexico
#20 of 366
5,694 births on an average September 4
INEGI, 2017–2023Guatemala
#25 of 366
1,025 births on an average September 4
INE Guatemala, 2018–2024Costa Rica
#34 of 366
180 births on an average September 4
INEC Costa Rica, 2014–2024Malaysia
#66 of 366
1,445 births on an average September 4
DOSM, 2000–2022Netherlands
#68 of 366
521 births on an average September 4
CBS, 1995–2025Philippines
#71 of 366
4,898 births on an average September 4
PSA, 2006–2024Finland
#73 of 366
147 births on an average September 4
Statistics Finland, 2010–2025Latvia
#73 of 366
57 births on an average September 4
CSB, 1996–2025Chile
#79 of 366
705 births on an average September 4
DEIS, 1990–2017Germany
#81 of 366
2,160 births on an average September 4
Destatis, 2014–2025Portugal
#84 of 366
304 births on an average September 4
INE Portugal, 1980–2025England & Wales
#86 of 366
1,821 births on an average September 4
ONS, 1995–2025Slovenia
#93 of 366
55 births on an average September 4
SURS, 2000–2025Denmark
#94 of 366
173 births on an average September 4
Statistics Denmark, 2007–2025Hungary
#107 of 366
332 births on an average September 4
KSH, 1970–2020Ecuador
#113 of 366
781 births on an average September 4
INEC, 2013–2023New Zealand
#115 of 366
159 births on an average September 4
Stats NZ, 1980–2023Belgium
#124 of 366
331 births on an average September 4
Statbel, 1992–2025Norway
#126 of 366
161 births on an average September 4
SSB, 2011–2025Peru
#145 of 366
1,215 births on an average September 4
INEI, 2019–2025France
#191 of 366
2,143 births on an average September 4
INSEE, 1998–2024Japan
#200 of 366
2,769 births on an average September 4
e-Stat, 1996–2025Brazil
#216 of 366
7,886 births on an average September 4
DATASUS, 1997–2024Ireland
#257 of 366
165 births on an average September 4
CSO, 1980–2023Argentina
#263 of 366
1,430 births on an average September 4
DEIS, 2018–2023Switzerland
#263 of 366
218 births on an average September 4
FSO, 1969–2025
Famous people born on September 4
Ranked by how often people looked them up on Wikipedia last year.
BeyoncéAmerican singer and songwriter · born 1981
Damon WayansAmerican comedian, actor, producer and writer · born 1960
Mark RonsonEnglish musician · born 1975
Whitney CummingsAmerican actress, writer · born 1982
Ione SkyeBritish-American actress · born 1970
Wes BentleyAmerican actor · born 1978
Jason David FrankAmerican actor · born 1973
Max GreenfieldAmerican actor · born 1979September against the other eleven
September 4 is the 3rd rarest 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 4?
About 10,873 a year in the United States. It was at its most common in 2013, when 13,533 babies were born and it ranked #1 of 365; at its rarest in 1994, with 8,420 births at #322.
Is September 4 a common birthday?
In the United States, September 4 is the 157th most common of 366 dates, with about 10,873 births a year. That makes it an ordinary birthday: neither rare nor especially common.
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?
In the middle of the calendar it is not exact. 74 other dates are within 1% of September 4's count, spread from #125 to #199, so the position inside that group would shift with a different set of years. That band is the accurate answer; the rank is the simple one. At the ends — Christmas Day, New Year's Day — nothing is close.
Is September 4 rarer in other countries?
In some. It is rarer in 6 of the 26 other countries we hold daily records for. It is at its rarest in Argentina and Switzerland, at #263 of 366, and at its most common in Mexico, at #20.
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