Is January 31 a rare birthday? Uncommon
Rarer than 83% of all 366 dates.
January 31 in numbers
The odds, the star sign and the other dates that come with it.
Where January 31 ranks
From most common birthday to rarest, January 31 ranks in position #305, with 10,518 births a year. 304 other dates are more common. 64 dates are within 1% of its count, anywhere from #267 to #331, so the exact position is a close thing.
January 31 through the years
Where it ranked in the United States, year by year.
common
January 31 in other countries
January 31 is the 62nd rarest birthday in the United States. It is among the 50 rarest in 5 of the 26 other countries, and ranges from #73 in Argentina to #363 in Malaysia.
Argentina
#73 of 366
1,632 births on an average January 31
DEIS, 2018–2023Chile
#128 of 366
695 births on an average January 31
DEIS, 1990–2017Norway
#175 of 366
157 births on an average January 31
SSB, 2011–2025Peru
#177 of 366
1,204 births on an average January 31
INEI, 2019–2025Netherlands
#180 of 366
496 births on an average January 31
CBS, 1995–2025Finland
#190 of 366
140 births on an average January 31
Statistics Finland, 2010–2025Slovenia
#200 of 366
53 births on an average January 31
SURS, 2000–2025Latvia
#223 of 366
53 births on an average January 31
CSB, 1996–2025Japan
#228 of 366
2,751 births on an average January 31
e-Stat, 1996–2025Germany
#238 of 366
1,972 births on an average January 31
Destatis, 2014–2025Denmark
#247 of 366
161 births on an average January 31
Statistics Denmark, 2007–2025Brazil
#249 of 366
7,768 births on an average January 31
DATASUS, 1997–2024England & Wales
#249 of 366
1,760 births on an average January 31
ONS, 1995–2025Guatemala
#250 of 366
928 births on an average January 31
INE Guatemala, 2018–2024Mexico
#257 of 366
4,868 births on an average January 31
INEGI, 2017–2023Philippines
#257 of 366
4,320 births on an average January 31
PSA, 2006–2024Switzerland
#262 of 366
218 births on an average January 31
FSO, 1969–2025Belgium
#266 of 366
320 births on an average January 31
Statbel, 1992–2025New Zealand
#267 of 366
155 births on an average January 31
Stats NZ, 1980–2023France
#280 of 366
2,097 births on an average January 31
INSEE, 1998–2024Hungary
#282 of 366
318 births on an average January 31
KSH, 1970–2020Costa Rica
#325 of 366
159 births on an average January 31
INEC Costa Rica, 2014–2024Portugal
#327 of 366
283 births on an average January 31
INE Portugal, 1980–2025Ireland
#331 of 366
161 births on an average January 31
CSO, 1980–2023Ecuador
#348 of 366
701 births on an average January 31
INEC, 2013–2023Malaysia
#363 of 366
1,281 births on an average January 31
DOSM, 2000–2022
Famous people born on January 31
Ranked by how often people looked them up on Wikipedia last year.
Justin TimberlakeAmerican singer, songwriter, and actor · born 1981
Jackie RobinsonAmerican baseball player · born 1919
Preity ZintaIndian actress · born 1975
Kerry WashingtonAmerican actress · born 1977
Minnie DriverBritish and American actress · born 1970
Jonathan BanksAmerican actor · born 1947
Dov CharneyCanadian entrepreneur · born 1969
Portia de RossiAustralian-American actress · born 1973January against the other eleven
January 31 is the 13th most common of the 31 days in January. All January birthdays.
January is the rarest month of the year
An average January day sees 10,394 births in the United States. September is the busiest month, January the quietest.
Quick answers
How many babies are born on January 31?
About 10,518 a year in the United States. It was at its most common in 1972, when 9,271 babies were born and it ranked #138 of 366; at its rarest in 2010, with 6,755 births at #361.
Is January 31 a common birthday?
In the United States, January 31 is the 62nd rarest of 366 dates, with about 10,518 births a year. That puts it on the rarer side of the calendar.
What is the rarest January birthday?
In the United States, January 1: the 2nd rarest of all 366 dates, with about 7,731 births a year. The most common January birthday is January 4, the 179th most common of the year.
How precise is the ranking?
In the middle of the calendar it is not exact. 64 other dates are within 1% of January 31's count, spread from #267 to #331, 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 January 31 rarer in other countries?
In some. It is rarer in 5 of the 26 other countries we hold daily records for. It is at its rarest in Malaysia, at #363 of 366, and at its most common in Argentina, at #73.
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