Is September 17 a rare birthday? Very common
More common than 97% of all 366 dates.
September 17 in numbers
The odds, the star sign and the other dates that come with it.
Where September 17 ranks
From most common birthday to rarest, September 17 ranks in position #12, with 11,706 births a year. 354 other dates are rarer. 13 dates are within 1% of its count, anywhere from #3 to #16, so the exact position is a close thing.
September 17 through the years
Where it ranked in the United States, year by year.
common
September 17 in other countries
September 17 is the 12th most common birthday in the United States. It is among the 50 most common in 14 of the 26 other countries, and ranges from #2 in Portugal to #348 in Chile.
Portugal
#2 of 366
330 births on an average September 17
INE Portugal, 1980–2025Hungary
#3 of 366
356 births on an average September 17
KSH, 1970–2020Guatemala
#4 of 366
1,100 births on an average September 17
INE Guatemala, 2018–2024Costa Rica
#5 of 366
190 births on an average September 17
INEC Costa Rica, 2014–2024Philippines
#10 of 366
5,297 births on an average September 17
PSA, 2006–2024Netherlands
#13 of 366
536 births on an average September 17
CBS, 1995–2025Ireland
#16 of 366
179 births on an average September 17
CSO, 1980–2023Mexico
#16 of 366
5,713 births on an average September 17
INEGI, 2017–2023England & Wales
#17 of 366
1,882 births on an average September 17
ONS, 1995–2025France
#18 of 366
2,263 births on an average September 17
INSEE, 1998–2024Japan
#20 of 366
2,993 births on an average September 17
e-Stat, 1996–2025New Zealand
#26 of 366
165 births on an average September 17
Stats NZ, 1980–2023Peru
#48 of 366
1,260 births on an average September 17
INEI, 2019–2025Latvia
#49 of 366
57 births on an average September 17
CSB, 1996–2025Malaysia
#51 of 366
1,465 births on an average September 17
DOSM, 2000–2022Germany
#59 of 366
2,187 births on an average September 17
Destatis, 2014–2025Switzerland
#63 of 366
229 births on an average September 17
FSO, 1969–2025Ecuador
#64 of 366
793 births on an average September 17
INEC, 2013–2023Slovenia
#64 of 366
56 births on an average September 17
SURS, 2000–2025Belgium
#66 of 366
337 births on an average September 17
Statbel, 1992–2025Denmark
#69 of 366
175 births on an average September 17
Statistics Denmark, 2007–2025Brazil
#141 of 366
8,145 births on an average September 17
DATASUS, 1997–2024Finland
#157 of 366
143 births on an average September 17
Statistics Finland, 2010–2025Argentina
#195 of 366
1,497 births on an average September 17
DEIS, 2018–2023Norway
#203 of 366
154 births on an average September 17
SSB, 2011–2025Chile
#348 of 366
650 births on an average September 17
DEIS, 1990–2017
Famous people born on September 17
Ranked by how often people looked them up on Wikipedia last year.
Patrick MahomesAmerican football player · born 1995
Narendra ModiPrime Minister of India since 2014 · born 1950
Alexander OvechkinRussian ice hockey player · born 1985
John RitterAmerican actor · born 1948
Danny RamirezAmerican actor · born 1992
Arne SlotDutch football manager · born 1978
Kyle ChandlerAmerican actor · born 1965
Chuck GrassleyAmerican politician · born 1933September against the other eleven
September 17 is the 10th 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 17?
About 11,706 a year in the United States. It was at its most common in 1991, when 13,579 babies were born and it ranked #1 of 365; at its rarest in 2023, with 7,201 births at #312.
Is September 17 a common birthday?
In the United States, September 17 is the 12th most common of 366 dates, with about 11,706 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?
In the middle of the calendar it is not exact. 13 other dates are within 1% of September 17's count, spread from #3 to #16, 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 17 rarer in other countries?
In some. It is rarer in 21 of the 26 other countries we hold daily records for. It is at its rarest in Chile, at #348 of 366, and at its most common in Portugal, at #2.
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