Is April 21 a rare birthday? Uncommon
Rarer than 83% of all 366 dates.
April 21 in numbers
The odds, the star sign and the other dates that come with it.
Where April 21 ranks
From most common birthday to rarest, April 21 ranks in position #304, with 10,520 births a year. 303 other dates are more common. 64 dates are within 1% of its count, anywhere from #266 to #330, so the exact position is a close thing.
April 21 through the years
Where it ranked in the United States, year by year.
common
April 21 in other countries
April 21 is the 63rd rarest birthday in the United States. It is among the 50 rarest in 4 of the 26 other countries, and ranges from #67 in Switzerland to #349 in England & Wales.
Switzerland
#67 of 366
229 births on an average April 21
FSO, 1969–2025Peru
#83 of 366
1,241 births on an average April 21
INEI, 2019–2025Costa Rica
#109 of 366
172 births on an average April 21
INEC Costa Rica, 2014–2024Argentina
#139 of 366
1,556 births on an average April 21
DEIS, 2018–2023Ecuador
#178 of 366
764 births on an average April 21
INEC, 2013–2023Norway
#179 of 366
157 births on an average April 21
SSB, 2011–2025Portugal
#200 of 366
296 births on an average April 21
INE Portugal, 1980–2025Belgium
#226 of 366
323 births on an average April 21
Statbel, 1992–2025Chile
#226 of 366
684 births on an average April 21
DEIS, 1990–2017Ireland
#227 of 366
166 births on an average April 21
CSO, 1980–2023Latvia
#229 of 366
53 births on an average April 21
CSB, 1996–2025Japan
#236 of 366
2,747 births on an average April 21
e-Stat, 1996–2025Hungary
#253 of 366
320 births on an average April 21
KSH, 1970–2020Netherlands
#265 of 366
489 births on an average April 21
CBS, 1995–2025Denmark
#279 of 366
159 births on an average April 21
Statistics Denmark, 2007–2025Philippines
#285 of 366
4,277 births on an average April 21
PSA, 2006–2024Brazil
#287 of 366
7,599 births on an average April 21
DATASUS, 1997–2024Malaysia
#291 of 366
1,364 births on an average April 21
DOSM, 2000–2022Finland
#294 of 366
136 births on an average April 21
Statistics Finland, 2010–2025New Zealand
#296 of 366
154 births on an average April 21
Stats NZ, 1980–2023Germany
#303 of 366
1,929 births on an average April 21
Destatis, 2014–2025Mexico
#306 of 366
4,742 births on an average April 21
INEGI, 2017–2023France
#328 of 366
2,066 births on an average April 21
INSEE, 1998–2024Guatemala
#329 of 366
900 births on an average April 21
INE Guatemala, 2018–2024Slovenia
#338 of 366
49 births on an average April 21
SURS, 2000–2025England & Wales
#349 of 366
1,728 births on an average April 21
ONS, 1995–2025
Famous people born on April 21
Ranked by how often people looked them up on Wikipedia last year.
Elizabeth IIQueen of the United Kingdom from 1952 to 2022 · born 1926
Andie MacDowellAmerican actress and model · born 1958
James McAvoyScottish actor · born 1979
Iggy PopAmerican rock musician · born 1947
Xavi SimonsDutch footballer · born 2003
Robert SmithEnglish rock musician · born 1959
Toby StephensEnglish actor · born 1969
Patti LuPoneAmerican actress and singer · born 1949April against the other eleven
April 21 is the 9th rarest of the 30 days in April. All April birthdays.
April is the 2nd rarest month of the year
An average April day sees 10,557 births in the United States. September is the busiest month, January the quietest.
Quick answers
How many babies are born on April 21?
About 10,520 a year in the United States. It was at its most common in 1992, when 12,582 babies were born and it ranked #32 of 366; at its rarest in 2019, with 6,152 births at #364.
Is April 21 a common birthday?
In the United States, April 21 is the 63rd rarest of 366 dates, with about 10,520 births a year. That puts it on the rarer side of the calendar.
What is the rarest April birthday?
In the United States, April 1: the 15th rarest of all 366 dates, with about 10,016 births a year. The most common April birthday is April 4, the 177th 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 April 21's count, spread from #266 to #330, 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 April 21 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 England & Wales, at #349 of 366, and at its most common in Switzerland, at #67.
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