Is December a rare birth month? Ordinary
Not really. December is the 4th rarest of the twelve in the United States, with about 10,633 births per day.
December in numbers
December holds two of the year's twenty most common birthdays and five of its twenty rarest.
December 28 is the most common day, December 25 the rarest
December 28#6 of 366 · 11,779 births a yearMost common and rarest December birthdays
The five most common December birthdays
The five rarest December birthdays
Why December ranks #9
December holds both extremes of the year: the rarest birthday of all, and a rush of births in the week before it.
- Christmas. December 25 is #366 of 366, 40% below an average day, and December 24 is #364: hospitals postpone every delivery they can. December 26 is #361.
- Either side of it. December 28 (#6) and December 20 (#15) are in the top twenty of the year: deliveries scheduled around the holiday land on either side of it.
- Per day, ordinary. Averaged over its 31 days, December lands #9 of the twelve. The pre-Christmas rush offsets the trough, and January, with no rush at all, is rarer.
December in 27 countries
December is #9 of the twelve in the United States. Across the other 26 countries it runs from #4 in Costa Rica to #12 in Argentina, Brazil, Ecuador, Guatemala, Peru, Denmark, England & Wales, Finland, Germany, Ireland, Latvia, the Netherlands, Norway, Portugal, Slovenia and Switzerland. It is the rarest birth month in 16 of them.
RarestMost common
December against the other eleven
December averages about 10,633 births per day, the 4th rarest of the twelve. By total births it climbs to #8, helped by its 31 days.
December is #9 of the twelve by births per day
About 10,633 a day in the United States; September, the most common, has 11,448.
Quick answers
Is December a rare birth month?
Not really. In US birth records December is the 4th rarest of the twelve, with about 10,633 births per day. December 28 is the most common December birthday; December 25 is the rarest.
How many babies are born in December?
About 329,634 a year in the United States, #8 of the twelve by total births. Per day that is about 10,633, the 4th rarest of the twelve.
What is the most common December birthday?
December 28, #6 of 366 in the United States, with about 11,779 births a year (+8.6% against an average day). The rarest December date is December 25, #366.
What is the most common birth month?
September, with about 11,448 US births per day. The rarest month per day is January. February has the fewest births in total because it is the shortest month, not because its days are the rarest.