Is September 20 a rare birthday? Very common
More common than 99% of all 366 dates.
September 20 in numbers
The odds, the star sign and the other dates that come with it.
Where September 20 ranks
From most common birthday to rarest, September 20 ranks in position #2, with 11,824 births a year. 364 other dates are rarer. 11 dates are within 1% of its count, anywhere from #1 to #12, so the exact position is a close thing.
September 20 through the years
Where it ranked in the United States, year by year.
common
September 20 in other countries
September 20 is the 2nd most common birthday in the United States. It is among the 50 most common in 20 of the 26 other countries, and ranges from #1 in 4 countries to #158 in Latvia.
Finland
#1 of 366
158 births on an average September 20
Statistics Finland, 2010–2025France
#1 of 366
2,290 births on an average September 20
INSEE, 1998–2024Guatemala
#1 of 366
1,115 births on an average September 20
INE Guatemala, 2018–2024Slovenia
#1 of 366
62 births on an average September 20
SURS, 2000–2025Mexico
#2 of 366
6,155 births on an average September 20
INEGI, 2017–2023Costa Rica
#3 of 366
193 births on an average September 20
INEC Costa Rica, 2014–2024Netherlands
#3 of 366
543 births on an average September 20
CBS, 1995–2025Philippines
#3 of 366
5,397 births on an average September 20
PSA, 2006–2024Portugal
#3 of 366
329 births on an average September 20
INE Portugal, 1980–2025Malaysia
#8 of 366
1,526 births on an average September 20
DOSM, 2000–2022Ecuador
#9 of 366
814 births on an average September 20
INEC, 2013–2023Ireland
#9 of 366
184 births on an average September 20
CSO, 1980–2023England & Wales
#12 of 366
1,901 births on an average September 20
ONS, 1995–2025Japan
#12 of 366
3,032 births on an average September 20
e-Stat, 1996–2025Hungary
#13 of 366
351 births on an average September 20
KSH, 1970–2020New Zealand
#15 of 366
169 births on an average September 20
Stats NZ, 1980–2023Germany
#18 of 366
2,250 births on an average September 20
Destatis, 2014–2025Belgium
#23 of 366
345 births on an average September 20
Statbel, 1992–2025Switzerland
#40 of 366
231 births on an average September 20
FSO, 1969–2025Chile
#46 of 366
717 births on an average September 20
DEIS, 1990–2017Peru
#63 of 366
1,253 births on an average September 20
INEI, 2019–2025Denmark
#98 of 366
173 births on an average September 20
Statistics Denmark, 2007–2025Argentina
#108 of 366
1,590 births on an average September 20
DEIS, 2018–2023Brazil
#121 of 366
8,214 births on an average September 20
DATASUS, 1997–2024Norway
#127 of 366
161 births on an average September 20
SSB, 2011–2025Latvia
#158 of 366
55 births on an average September 20
CSB, 1996–2025
Famous people born on September 20
Ranked by how often people looked them up on Wikipedia last year.
Jon BernthalAmerican actor · born 1976
Khabib NurmagomedovRussian mixed martial artist · born 1988
Sophia LorenItalian actress · born 1934
George R. R. MartinAmerican writer and television producer · born 1948
Asia ArgentoItalian actress and filmmaker · born 1975
Ainsley EarhardtAmerican television host and author (born 1975/76) · born 1976
Kristen JohnstonAmerican actress · born 1967
Anne MearaAmerican comedian and actress · born 1929September against the other eleven
September 20 is the 2nd 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 20?
About 11,824 a year in the United States. It was at its most common in 1977, when 10,647 babies were born and it ranked #1 of 365; at its rarest in 2020, with 7,073 births at #314.
Is September 20 a common birthday?
In the United States, September 20 is the 2nd most common of 366 dates, with about 11,824 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. 11 other dates are within 1% of September 20's count, spread from #1 to #12, 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 20 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 Latvia, at #158 of 366, and at its most common in 4 countries, at #1.
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