Is May 9 a rare birthday? Ordinary
Rarer than 67% of all 366 dates.
May 9 in numbers
The odds, the star sign and the other dates that come with it.
Where May 9 ranks
From most common birthday to rarest, May 9 ranks in position #245, with 10,658 births a year. 244 other dates are more common. 91 dates are within 1% of its count, anywhere from #200 to #291, so the exact position is a close thing.
May 9 through the years
Where it ranked in the United States, year by year.
common
May 9 in other countries
May 9 is the 122nd rarest birthday in the United States. It is among the 50 rarest in 1 of the 26 other countries, and ranges from #25 in Japan to #327 in Chile.
Japan
#25 of 366
2,972 births on an average May 9
e-Stat, 1996–2025Ecuador
#45 of 366
798 births on an average May 9
INEC, 2013–2023Brazil
#55 of 366
8,550 births on an average May 9
DATASUS, 1997–2024Portugal
#58 of 366
306 births on an average May 9
INE Portugal, 1980–2025Ireland
#82 of 366
172 births on an average May 9
CSO, 1980–2023Switzerland
#88 of 366
228 births on an average May 9
FSO, 1969–2025England & Wales
#121 of 366
1,808 births on an average May 9
ONS, 1995–2025Argentina
#126 of 366
1,575 births on an average May 9
DEIS, 2018–2023Peru
#140 of 366
1,216 births on an average May 9
INEI, 2019–2025Slovenia
#141 of 366
54 births on an average May 9
SURS, 2000–2025Norway
#156 of 366
158 births on an average May 9
SSB, 2011–2025Netherlands
#158 of 366
498 births on an average May 9
CBS, 1995–2025Latvia
#164 of 366
54 births on an average May 9
CSB, 1996–2025Germany
#178 of 366
2,015 births on an average May 9
Destatis, 2014–2025Malaysia
#185 of 366
1,395 births on an average May 9
DOSM, 2000–2022Belgium
#203 of 366
325 births on an average May 9
Statbel, 1992–2025Costa Rica
#207 of 366
166 births on an average May 9
INEC Costa Rica, 2014–2024Philippines
#239 of 366
4,344 births on an average May 9
PSA, 2006–2024Hungary
#244 of 366
322 births on an average May 9
KSH, 1970–2020New Zealand
#256 of 366
155 births on an average May 9
Stats NZ, 1980–2023Guatemala
#257 of 366
926 births on an average May 9
INE Guatemala, 2018–2024Denmark
#259 of 366
161 births on an average May 9
Statistics Denmark, 2007–2025Mexico
#272 of 366
4,839 births on an average May 9
INEGI, 2017–2023France
#277 of 366
2,098 births on an average May 9
INSEE, 1998–2024Finland
#309 of 366
135 births on an average May 9
Statistics Finland, 2010–2025Chile
#327 of 366
668 births on an average May 9
DEIS, 1990–2017
Famous people born on May 9
Ranked by how often people looked them up on Wikipedia last year.
Billy JoelAmerican singer, songwriter, and pianist · born 1949
John BrownAmerican abolitionist · born 1800
Rosario DawsonAmerican actress · born 1979
Noah CentineoAmerican actor · born 1996
ShaboozeyAmerican musician · born 1995
Candice BergenAmerican actress · born 1946
John CorbettAmerican actor and country music singer · born 1961
Dan BurnEnglish footballer · born 1992May against the other eleven
May 9 is the 11th rarest of the 31 days in May. All May birthdays.
May is the 6th most common month of the year
An average May day sees 10,702 births in the United States. September is the busiest month, January the quietest.
Quick answers
How many babies are born on May 9?
About 10,658 a year in the United States. It was at its most common in 2019, when 11,562 babies were born and it ranked #107 of 365; at its rarest in 1976, with 6,675 births at #366.
Is May 9 a common birthday?
In the United States, May 9 is the 122nd rarest of 366 dates, with about 10,658 births a year. That makes it an ordinary birthday: neither rare nor especially common.
What is the rarest May birthday?
In the United States, May 27: the 20th rarest of all 366 dates, with about 10,322 births a year. The most common May birthday is May 24, the 105th most common of the year.
How precise is the ranking?
In the middle of the calendar it is not exact. 91 other dates are within 1% of May 9's count, spread from #200 to #291, 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 May 9 rarer in other countries?
In some. It is rarer in 7 of the 26 other countries we hold daily records for. It is at its rarest in Chile, at #327 of 366, and at its most common in Japan, at #25.
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