BirthdayStatistics.com symbolBirthdayStatistics.com
Birthday Statistics

Rarest Birthdays

Compare the dates with the fewest recorded U.S. births from 2000–2014, including February 29. The statistics use recorded U.S. births from 2000–2014; birthday symbols and traditions are presented separately.

✦

The 20 Rarest Birthdays

Ranked by total recorded U.S. births, 2000–2014. #366 has the fewest births. February 29 occurred four times; the other dates occurred fifteen times.

#1rarestFebruary 2941,869 recorded births0.067% of the dataset; 4 occurrences.#366of 366#2rarestDecember 2596,568 recorded births0.155% of the dataset; 15 occurrences.#365of 366#3rarestJanuary 1116,030 recorded births0.187% of the dataset; 15 occurrences.#364of 366#4rarestDecember 24120,516 recorded births0.194% of the dataset; 15 occurrences.#363of 366#5rarestJuly 4132,229 recorded births0.213% of the dataset; 15 occurrences.#362of 366#6rarestJanuary 2144,083 recorded births0.232% of the dataset; 15 occurrences.#361of 366#7rarestDecember 26148,113 recorded births0.238% of the dataset; 15 occurrences.#360of 366#8rarestNovember 23148,131 recorded births0.238% of the dataset; 15 occurrences.#359of 366#9rarestNovember 25149,677 recorded births0.241% of the dataset; 15 occurrences.#358of 366#10rarestNovember 27150,190 recorded births0.242% of the dataset; 15 occurrences.#357of 366#11rarestNovember 24150,369 recorded births0.242% of the dataset; 15 occurrences.#356of 366#12rarestOctober 31153,942 recorded births0.248% of the dataset; 15 occurrences.#355of 366#13rarestApril 1154,737 recorded births0.249% of the dataset; 15 occurrences.#354of 366#14rarestMay 26154,955 recorded births0.249% of the dataset; 15 occurrences.#353of 366#15rarestDecember 23155,501 recorded births0.250% of the dataset; 15 occurrences.#352of 366#16rarestNovember 26155,791 recorded births0.251% of the dataset; 15 occurrences.#351of 366#17rarestNovember 28157,291 recorded births0.253% of the dataset; 15 occurrences.#350of 366#18rarestApril 13157,511 recorded births0.253% of the dataset; 15 occurrences.#349of 366#19rarestDecember 31158,230 recorded births0.254% of the dataset; 15 occurrences.#348of 366#20rarestJanuary 13159,289 recorded births0.256% of the dataset; 15 occurrences.#347of 366

Among dates that occur every year, December 25 has the lowest total. Ranking by births per occurrence would change leap day’s position.

Source: U.S. births, 2000–2014, from the Social Security Administration dataset published by FiveThirtyEight. BirthdayStatistics.com aggregates the recorded counts by month and day. Data licensed CC BY 4.0. Method and limitations.

How to Interpret the List

This ranking is calculated from recorded U.S. births for 2000–2014. It ranks total births by month and day, including February 29. Different countries, periods, and leap-day counting methods can produce different rankings.

Use the How Rare Is My Birthday? calculator to check any month and day, or compare the other end of the calendar on the Most Common Birthdays page.

What Often Makes a Birthday Rare?

  • It occurs on February 29 and therefore appears only in leap years.
  • It falls on a major holiday when scheduled deliveries may be less common.
  • It sits inside a year-end travel or holiday period.
  • It has fewer recorded births in this historical U.S. dataset.

Check These Out

How Rare Is My Birthday?How Rare Is My Birthday?Estimate your own date.Most Common BirthdaysMost Common BirthdaysCompare common birthday patterns.Leap Year Birthday CalculatorLeap Year Birthday CalculatorCheck February 29 birthdays.