Is August 31 a rare birthday? Popular
More common than 91% of all 366 dates.
August 31 in numbers
The odds, the star sign and the other dates that come with it.
Where August 31 ranks
From most common birthday to rarest, August 31 ranks in position #33, with 11,504 births a year. 333 other dates are rarer. 40 dates are within 1% of its count, anywhere from #16 to #56, so the exact position is a close thing.
August 31 through the years
Where it ranked in the United States, year by year.
common
August 31 in other countries
August 31 is the 33rd most common birthday in the United States. It is among the 50 most common in 2 of the 26 other countries, and ranges from #37 in Finland to #349 in Chile.
Finland
#37 of 366
149 births on an average August 31
Statistics Finland, 2010–2025Mexico
#40 of 366
5,523 births on an average August 31
INEGI, 2017–2023Malaysia
#65 of 366
1,446 births on an average August 31
DOSM, 2000–2022Netherlands
#74 of 366
520 births on an average August 31
CBS, 1995–2025Costa Rica
#91 of 366
175 births on an average August 31
INEC Costa Rica, 2014–2024Germany
#99 of 366
2,140 births on an average August 31
Destatis, 2014–2025Guatemala
#126 of 366
963 births on an average August 31
INE Guatemala, 2018–2024New Zealand
#127 of 366
159 births on an average August 31
Stats NZ, 1980–2023Philippines
#127 of 366
4,613 births on an average August 31
PSA, 2006–2024Denmark
#136 of 366
168 births on an average August 31
Statistics Denmark, 2007–2025Norway
#149 of 366
160 births on an average August 31
SSB, 2011–2025Hungary
#173 of 366
327 births on an average August 31
KSH, 1970–2020Portugal
#207 of 366
296 births on an average August 31
INE Portugal, 1980–2025Argentina
#229 of 366
1,471 births on an average August 31
DEIS, 2018–2023Slovenia
#229 of 366
52 births on an average August 31
SURS, 2000–2025France
#250 of 366
2,116 births on an average August 31
INSEE, 1998–2024Switzerland
#251 of 366
219 births on an average August 31
FSO, 1969–2025Ecuador
#261 of 366
744 births on an average August 31
INEC, 2013–2023Belgium
#279 of 366
319 births on an average August 31
Statbel, 1992–2025Latvia
#286 of 366
51 births on an average August 31
CSB, 1996–2025Ireland
#288 of 366
164 births on an average August 31
CSO, 1980–2023Japan
#313 of 366
2,686 births on an average August 31
e-Stat, 1996–2025Brazil
#328 of 366
7,424 births on an average August 31
DATASUS, 1997–2024England & Wales
#333 of 366
1,738 births on an average August 31
ONS, 1995–2025Peru
#342 of 366
1,108 births on an average August 31
INEI, 2019–2025Chile
#349 of 366
647 births on an average August 31
DEIS, 1990–2017
Famous people born on August 31
Ranked by how often people looked them up on Wikipedia last year.
Amanda AnisimovaAmerican tennis player · born 2001
Mohammed bin SalmanCrown Prince of Saudi Arabia since 2017 · born 1985
Richard GereAmerican actor · born 1949
Jalen BrunsonAmerican basketball player · born 1996
Chris TuckerAmerican actor and comedian · born 1971
Van MorrisonNorthern Irish musician · born 1945
Jeff HardyAmerican professional wrestler · born 1977
JahangirMughal emperor from 1605 to 1627 · born 1569August against the other eleven
August 31 is the 8th most common of the 31 days in August. All August birthdays.
August is the 2nd most common month of the year
An average August day sees 11,405 births in the United States. September is the busiest month, January the quietest.
Quick answers
How many babies are born on August 31?
About 11,504 a year in the United States. It was at its most common in 2023, when 11,765 babies were born and it ranked #11 of 365; at its rarest in 2003, with 7,743 births at #322.
Is August 31 a common birthday?
In the United States, August 31 is the 33rd most common of 366 dates, with about 11,504 births a year. That puts it among the more common birthdays.
What is the rarest August birthday?
In the United States, August 13: the 103rd most common of all 366 dates, with about 11,121 births a year. The most common August birthday is August 16, the 16th most common of the year.
How precise is the ranking?
In the middle of the calendar it is not exact. 40 other dates are within 1% of August 31's count, spread from #16 to #56, 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 August 31 rarer in other countries?
Yes, in all 26 other countries we hold daily records for. It is at its rarest in Chile, at #349 of 366, and at its most common in Finland, at #37.
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