Is August 9 a rare birthday? Popular

More common than 92% of all 366 dates.

August 9 #32
Most commonSeptember 9RarestDecember 25
Cartoon birthday scene for August 9: a child behind a cake whose candles spell the date
At a glance

August 9 in numbers

The odds, the star sign and the other dates that come with it.

Born each year≈ 11,511in the United States — about 984,000 of them are alive today
In a full stadium145 peopleof 50,000 were born on August 9
On the day itselfEvery 8 secondsa baby is born on August 9 somewhere in the United States
Star signLeomore common than 26 of the 31 Leo birthdays
Half-birthdayFebruary 9six months later, to the day
Conceived aroundNovember 16A cosy autumn night, then.
Birth frequency by rank

Where August 9 ranks

From most common birthday to rarest, August 9 ranks in position #32, with 11,511 births a year. 334 other dates are rarer. 38 dates are within 1% of its count, anywhere from #15 to #53, so the exact position is a close thing.

56 years of records

August 9 through the years

Where it ranked in the United States, year by year.

Fell on a weekdayOn a weekend
rarestmost
common
1969, Saturday: rank #149 of 365, 10,092 births1970, Sunday: rank #297 of 365, 9,458 births1971, Monday: rank #98 of 365, 10,336 births1972, Wednesday: rank #87 of 366, 9,481 births1973, Thursday: rank #39 of 365, 9,418 births1974, Friday: rank #41 of 365, 9,696 births1975, Saturday: rank #271 of 365, 8,016 births1976, Monday: rank #82 of 366, 9,343 births1977, Tuesday: rank #18 of 365, 10,272 births1978, Wednesday: rank #46 of 365, 10,163 births1979, Thursday: rank #52 of 365, 10,570 births1980, Saturday: rank #261 of 366, 9,466 births1981, Sunday: rank #267 of 365, 9,360 births1982, Monday: rank #79 of 365, 10,903 births1983, Tuesday: rank #16 of 365, 11,139 births1984, Thursday: rank #39 of 366, 11,377 births1985, Friday: rank #34 of 365, 11,542 births1986, Saturday: rank #258 of 365, 9,560 births1987, Sunday: rank #326 of 365, 8,637 births1988, Tuesday: rank #24 of 366, 12,282 births1989, Wednesday: rank #54 of 365, 12,448 births1990, Thursday: rank #47 of 365, 12,765 births1991, Friday: rank #42 of 365, 12,731 births1992, Sunday: rank #312 of 366, 9,062 births1993, Monday: rank #169 of 365, 11,700 births1994, Tuesday: rank #11 of 365, 12,643 births1995, Wednesday: rank #57 of 365, 12,217 births1996, Friday: rank #53 of 366, 12,167 births1997, Saturday: rank #268 of 365, 8,876 births1998, Sunday: rank #314 of 365, 8,168 births1999, Monday: rank #218 of 365, 11,408 births2000, Wednesday: rank #39 of 366, 12,926 births2001, Thursday: rank #29 of 365, 13,080 births2002, Friday: rank #71 of 365, 12,664 births2003, Saturday: rank #261 of 365, 9,109 births2004, Monday: rank #215 of 366, 12,094 births2005, Tuesday: rank #32 of 365, 13,607 births2006, Wednesday: rank #42 of 365, 14,047 births2007, Thursday: rank #44 of 365, 14,143 births2008, Saturday: rank #259 of 366, 9,128 births2009, Sunday: rank #315 of 365, 7,604 births2010, Monday: rank #63 of 365, 12,775 births2011, Tuesday: rank #25 of 365, 13,149 births2012, Thursday: rank #31 of 366, 13,030 births2013, Friday: rank #58 of 365, 12,635 births2014, Saturday: rank #258 of 365, 8,936 births2015, Sunday: rank #321 of 365, 7,726 births2016, Tuesday: rank #15 of 366, 12,987 births2017, Wednesday: rank #35 of 365, 12,525 births2018, Thursday: rank #31 of 365, 12,295 births2019, Friday: rank #45 of 365, 12,110 births2020, Sunday: rank #318 of 366, 6,980 births2021, Monday: rank #130 of 365, 11,221 births2022, Tuesday: rank #15 of 365, 12,147 births2023, Wednesday: rank #22 of 365, 11,668 births2024, Friday: rank #34 of 366, 11,631 births1970198019902000201020202024

On a weekend it slips to #278, from #57 on a working day

Inductions and planned caesareans are booked on working days, so 26.3% fewer babies arrive and the date falls down the ranking. Each bar is the average rank of the years it landed on that day.

#132
Mon
#20
Tue
#48
Wed
#39
Thu
#47
Fri
#248
Sat
#309
Sun
Most common year
1994#11 of 365Tuesday · 12,643 births
Rarest year
1987#326 of 365Sunday · 8,637 births
Weekend years
16 of 5629% of the record2020 was the most recent
Around the world

August 9 in other countries

August 9 is the 32nd most common birthday in the United States. It is among the 50 most common in 3 of the 26 other countries, and ranges from #10 in Finland to #286 in Chile.

  1. Finland

    #10 of 366

    152 births on an average August 9

    Statistics Finland, 2010–⁠2025
  2. Norway

    #21 of 366

    171 births on an average August 9

    SSB, 2011–⁠2025
  3. Ireland

    #38 of 366

    174 births on an average August 9

    CSO, 1980–⁠2023
  4. Japan

    #60 of 366

    2,900 births on an average August 9

    e-Stat, 1996–⁠2025
  5. Denmark

    #66 of 366

    175 births on an average August 9

    Statistics Denmark, 2007–⁠2025
  6. England & Wales

    #68 of 366

    1,828 births on an average August 9

    ONS, 1995–⁠2025
  7. Germany

    #74 of 366

    2,171 births on an average August 9

    Destatis, 2014–⁠2025
  8. France

    #75 of 366

    2,208 births on an average August 9

    INSEE, 1998–⁠2024
  9. Mexico

    #76 of 366

    5,338 births on an average August 9

    INEGI, 2017–⁠2023
  10. Hungary

    #80 of 366

    337 births on an average August 9

    KSH, 1970–⁠2020
  11. Netherlands

    #84 of 366

    518 births on an average August 9

    CBS, 1995–⁠2025
  12. Slovenia

    #106 of 366

    55 births on an average August 9

    SURS, 2000–⁠2025
  13. Belgium

    #109 of 366

    333 births on an average August 9

    Statbel, 1992–⁠2025
  14. Malaysia

    #114 of 366

    1,414 births on an average August 9

    DOSM, 2000–⁠2022
  15. Latvia

    #127 of 366

    55 births on an average August 9

    CSB, 1996–⁠2025
  16. Guatemala

    #136 of 366

    958 births on an average August 9

    INE Guatemala, 2018–⁠2024
  17. New Zealand

    #168 of 366

    157 births on an average August 9

    Stats NZ, 1980–⁠2023
  18. Argentina

    #176 of 366

    1,519 births on an average August 9

    DEIS, 2018–⁠2023
  19. Portugal

    #183 of 366

    298 births on an average August 9

    INE Portugal, 1980–⁠2025
  20. Costa Rica

    #211 of 366

    165 births on an average August 9

    INEC Costa Rica, 2014–⁠2024
  21. Philippines

    #213 of 366

    4,396 births on an average August 9

    PSA, 2006–⁠2024
  22. Ecuador

    #218 of 366

    758 births on an average August 9

    INEC, 2013–⁠2023
  23. Peru

    #250 of 366

    1,170 births on an average August 9

    INEI, 2019–⁠2025
  24. Brazil

    #252 of 366

    7,766 births on an average August 9

    DATASUS, 1997–⁠2024
  25. Switzerland

    #260 of 366

    219 births on an average August 9

    FSO, 1969–⁠2025
  26. Chile

    #286 of 366

    677 births on an average August 9

    DEIS, 1990–⁠2017
Zoom out

August against the other eleven

August 9 is the 7th most common of the 31 days in August. All August birthdays.

August is the 2nd most common month of the year

An average August day sees 11,405 births in the United States. September is the busiest month, January the quietest.

August 9 is the 4th most common of the 15 days around it

The whole year

Every date on one grid

In the United States, September is the busiest month of the year to be born in and January the quietest.

Each square is one date

August 9#32 of 36611,511 births a year

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD151015202530
RarestMost common

Compare with a friend

See how August 9 stacks up against someone else's birthday.

YouAugust 9
#32Rank
11,511Births a year
Friend
Questions

Quick answers

How many babies are born on August 9?

About 11,511 a year in the United States. It was at its most common in 1994, when 12,643 babies were born and it ranked #11 of 365; at its rarest in 1987, with 8,637 births at #326.

Is August 9 a common birthday?

In the United States, August 9 is the 32nd most common of 366 dates, with about 11,511 births a year. That puts it among the more common birthdays.

What is the rarest August birthday?

In the United States, August 13: the 103rd most common of all 366 dates, with about 11,121 births a year. The most common August birthday is August 16, the 16th most common of the year.

How precise is the ranking?

In the middle of the calendar it is not exact. 38 other dates are within 1% of August 9's count, spread from #15 to #53, 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 August 9 rarer in other countries?

In some. It is rarer in 24 of the 26 other countries we hold daily records for. It is at its rarest in Chile, at #286 of 366, and at its most common in Finland, at #10.

Our data

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.

Read the full methodology →

Updated October 2026