Is January 18 a rare birthday? Ordinary
Rarer than 65% of all 366 dates.
January 18 in numbers
The odds, the star sign and the other dates that come with it.
Where January 18 ranks
From most common birthday to rarest, January 18 ranks in position #238, with 10,680 births a year. 237 other dates are more common. 93 dates are within 1% of its count, anywhere from #191 to #284, so the exact position is a close thing.
January 18 through the years
Where it ranked in the United States, year by year.
common
January 18 in other countries
January 18 is the 129th rarest birthday in the United States. It is among the 50 rarest in 3 of the 26 other countries, and ranges from #50 in Chile to #328 in England & Wales.
Chile
#50 of 366
716 births on an average January 18
DEIS, 1990–2017Guatemala
#51 of 366
995 births on an average January 18
INE Guatemala, 2018–2024Argentina
#52 of 366
1,667 births on an average January 18
DEIS, 2018–2023Philippines
#104 of 366
4,721 births on an average January 18
PSA, 2006–2024Mexico
#105 of 366
5,206 births on an average January 18
INEGI, 2017–2023Japan
#118 of 366
2,829 births on an average January 18
e-Stat, 1996–2025Peru
#119 of 366
1,224 births on an average January 18
INEI, 2019–2025Belgium
#144 of 366
329 births on an average January 18
Statbel, 1992–2025Norway
#180 of 366
156 births on an average January 18
SSB, 2011–2025Switzerland
#191 of 366
223 births on an average January 18
FSO, 1969–2025Slovenia
#193 of 366
53 births on an average January 18
SURS, 2000–2025Brazil
#198 of 366
7,939 births on an average January 18
DATASUS, 1997–2024Hungary
#201 of 366
326 births on an average January 18
KSH, 1970–2020France
#213 of 366
2,130 births on an average January 18
INSEE, 1998–2024Latvia
#225 of 366
53 births on an average January 18
CSB, 1996–2025Costa Rica
#226 of 366
165 births on an average January 18
INEC Costa Rica, 2014–2024Ireland
#228 of 366
166 births on an average January 18
CSO, 1980–2023Portugal
#231 of 366
294 births on an average January 18
INE Portugal, 1980–2025Germany
#236 of 366
1,973 births on an average January 18
Destatis, 2014–2025Netherlands
#247 of 366
490 births on an average January 18
CBS, 1995–2025Finland
#275 of 366
137 births on an average January 18
Statistics Finland, 2010–2025Denmark
#297 of 366
158 births on an average January 18
Statistics Denmark, 2007–2025Malaysia
#298 of 366
1,360 births on an average January 18
DOSM, 2000–2022New Zealand
#323 of 366
153 births on an average January 18
Stats NZ, 1980–2023Ecuador
#326 of 366
715 births on an average January 18
INEC, 2013–2023England & Wales
#328 of 366
1,740 births on an average January 18
ONS, 1995–2025
Famous people born on January 18
Ranked by how often people looked them up on Wikipedia last year.
Kevin CostnerAmerican actor and filmmaker · born 1955
Dave BautistaAmerican actor and professional wrestler · born 1969
Cary GrantBritish-American actor · born 1904
Pep GuardiolaCatalan football manager and player · born 1971
Jason SegelAmerican actor, writer · born 1980
Mark RylanceEnglish actor, playwright and theatre director · born 1960
Jonathan DavisAmerican singer · born 1971
Aitana BonmatíSpanish footballer · born 1998January against the other eleven
January 18 is the 6th 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 18?
About 10,680 a year in the United States. It was at its most common in 1971, when 10,974 babies were born and it ranked #12 of 365; at its rarest in 1987, with 8,095 births at #363.
Is January 18 a common birthday?
In the United States, January 18 is the 129th rarest of 366 dates, with about 10,680 births a year. That makes it an ordinary birthday: neither rare nor especially common.
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. 93 other dates are within 1% of January 18's count, spread from #191 to #284, 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 18 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 England & Wales, at #328 of 366, and at its most common in Chile, at #50.
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