Is December 18 a rare birthday? Popular

More common than 77% of all 366 dates.

December 18 #85
Most commonSeptember 9RarestDecember 25
Cartoon birthday scene for December 18: a child behind a cake whose candles spell the date
At a glance

December 18 in numbers

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

Born each year≈ 11,273in the United States — about 964,000 of them are alive today
In a full stadium142 peopleof 50,000 were born on December 18
On the day itselfEvery 8 secondsa baby is born on December 18 somewhere in the United States
Star signSagittariusmore common than 26 of the 30 Sagittarius birthdays
Half-birthdayJune 18six months later, to the day
Conceived aroundMarch 27Right around April Fools' Day.
Birth frequency by rank

Where December 18 ranks

From most common birthday to rarest, December 18 ranks in position #85, with 11,273 births a year. 281 other dates are rarer. 41 dates are within 1% of its count, anywhere from #57 to #98, so the exact position is a close thing.

56 years of records

December 18 through the years

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

Fell on a weekdayOn a weekend
rarestmost
common
1969, Thursday: rank #96 of 365, 10,426 births1970, Friday: rank #11 of 365, 11,708 births1971, Saturday: rank #333 of 365, 8,522 births1972, Monday: rank #7 of 366, 10,101 births1973, Tuesday: rank #27 of 365, 9,536 births1974, Wednesday: rank #74 of 365, 9,403 births1975, Thursday: rank #64 of 365, 9,368 births1976, Saturday: rank #284 of 366, 7,981 births1977, Sunday: rank #355 of 365, 7,583 births1978, Monday: rank #35 of 365, 10,213 births1979, Tuesday: rank #48 of 365, 10,592 births1980, Thursday: rank #81 of 366, 10,580 births1981, Friday: rank #71 of 365, 10,853 births1982, Saturday: rank #338 of 365, 8,502 births1983, Sunday: rank #359 of 365, 8,170 births1984, Tuesday: rank #30 of 366, 11,444 births1985, Wednesday: rank #110 of 365, 10,983 births1986, Thursday: rank #83 of 365, 11,187 births1987, Friday: rank #17 of 365, 11,872 births1988, Sunday: rank #354 of 366, 8,431 births1989, Monday: rank #90 of 365, 12,085 births1990, Tuesday: rank #35 of 365, 12,921 births1991, Wednesday: rank #60 of 365, 12,588 births1992, Friday: rank #41 of 366, 12,509 births1993, Saturday: rank #303 of 365, 8,870 births1994, Sunday: rank #346 of 365, 8,130 births1995, Monday: rank #216 of 365, 11,139 births1996, Wednesday: rank #61 of 366, 12,116 births1997, Thursday: rank #20 of 365, 12,543 births1998, Friday: rank #30 of 365, 12,634 births1999, Saturday: rank #267 of 365, 8,979 births2000, Monday: rank #133 of 366, 12,276 births2001, Tuesday: rank #12 of 365, 13,300 births2002, Wednesday: rank #25 of 365, 13,252 births2003, Thursday: rank #20 of 365, 13,594 births2004, Saturday: rank #285 of 366, 8,487 births2005, Sunday: rank #327 of 365, 7,497 births2006, Monday: rank #112 of 365, 13,319 births2007, Tuesday: rank #8 of 365, 14,718 births2008, Thursday: rank #16 of 366, 14,074 births2009, Friday: rank #63 of 365, 13,259 births2010, Saturday: rank #264 of 365, 8,368 births2011, Sunday: rank #356 of 365, 6,802 births2012, Tuesday: rank #26 of 366, 13,124 births2013, Wednesday: rank #28 of 365, 12,927 births2014, Thursday: rank #46 of 365, 12,835 births2015, Friday: rank #123 of 365, 12,247 births2016, Sunday: rank #345 of 366, 7,140 births2017, Monday: rank #141 of 365, 11,681 births2018, Tuesday: rank #17 of 365, 12,467 births2019, Wednesday: rank #76 of 365, 11,725 births2020, Friday: rank #221 of 366, 10,575 births2021, Saturday: rank #278 of 365, 7,977 births2022, Sunday: rank #326 of 365, 7,128 births2023, Monday: rank #145 of 365, 10,890 births2024, Wednesday: rank #31 of 366, 11,669 births1970198019902000201020202024

On a weekend it slips to #320, from #64 on a working day

Inductions and planned caesareans are booked on working days, so 32.3% fewer babies arrive and the date falls down the ranking. Each bar is the average rank of the years it landed on that day.

#110
Mon
#25
Tue
#58
Wed
#53
Thu
#72
Fri
#294
Sat
#346
Sun
Most common year
1972#7 of 366Monday · 10,101 births
Rarest year
1983#359 of 365Sunday · 8,170 births
Weekend years
16 of 5629% of the record2022 was the most recent
Around the world

December 18 in other countries

December 18 is the 85th most common birthday in the United States. It is among the 50 most common in 5 of the 26 other countries, and ranges from #21 in Ireland to #346 in Finland.

  1. Ireland

    #21 of 366

    177 births on an average December 18

    CSO, 1980–⁠2023
  2. New Zealand

    #34 of 366

    164 births on an average December 18

    Stats NZ, 1980–⁠2023
  3. Chile

    #35 of 366

    720 births on an average December 18

    DEIS, 1990–⁠2017
  4. Belgium

    #44 of 366

    340 births on an average December 18

    Statbel, 1992–⁠2025
  5. Portugal

    #46 of 366

    308 births on an average December 18

    INE Portugal, 1980–⁠2025
  6. France

    #56 of 366

    2,223 births on an average December 18

    INSEE, 1998–⁠2024
  7. Costa Rica

    #78 of 366

    175 births on an average December 18

    INEC Costa Rica, 2014–⁠2024
  8. Philippines

    #101 of 366

    4,732 births on an average December 18

    PSA, 2006–⁠2024
  9. England & Wales

    #111 of 366

    1,811 births on an average December 18

    ONS, 1995–⁠2025
  10. Mexico

    #124 of 366

    5,157 births on an average December 18

    INEGI, 2017–⁠2023
  11. Japan

    #132 of 366

    2,816 births on an average December 18

    e-Stat, 1996–⁠2025
  12. Hungary

    #159 of 366

    328 births on an average December 18

    KSH, 1970–⁠2020
  13. Germany

    #165 of 366

    2,026 births on an average December 18

    Destatis, 2014–⁠2025
  14. Guatemala

    #183 of 366

    947 births on an average December 18

    INE Guatemala, 2018–⁠2024
  15. Argentina

    #204 of 366

    1,490 births on an average December 18

    DEIS, 2018–⁠2023
  16. Brazil

    #258 of 366

    7,723 births on an average December 18

    DATASUS, 1997–⁠2024
  17. Switzerland

    #261 of 366

    219 births on an average December 18

    FSO, 1969–⁠2025
  18. Netherlands

    #269 of 366

    488 births on an average December 18

    CBS, 1995–⁠2025
  19. Slovenia

    #273 of 366

    51 births on an average December 18

    SURS, 2000–⁠2025
  20. Denmark

    #276 of 366

    159 births on an average December 18

    Statistics Denmark, 2007–⁠2025
  21. Malaysia

    #284 of 366

    1,369 births on an average December 18

    DOSM, 2000–⁠2022
  22. Peru

    #307 of 366

    1,138 births on an average December 18

    INEI, 2019–⁠2025
  23. Latvia

    #312 of 366

    50 births on an average December 18

    CSB, 1996–⁠2025
  24. Ecuador

    #328 of 366

    714 births on an average December 18

    INEC, 2013–⁠2023
  25. Norway

    #329 of 366

    135 births on an average December 18

    SSB, 2011–⁠2025
  26. Finland

    #346 of 366

    129 births on an average December 18

    Statistics Finland, 2010–⁠2025
Zoom out

December against the other eleven

December 18 is the 8th most common of the 31 days in December. All December birthdays.

December is the 4th rarest month of the year

An average December day sees 10,633 births in the United States. September is the busiest month, January the quietest.

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

December 18#85 of 36611,273 births a year

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD151015202530
RarestMost common

Compare with a friend

See how December 18 stacks up against someone else's birthday.

YouDecember 18
#85Rank
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Questions

Quick answers

How many babies are born on December 18?

About 11,273 a year in the United States. It was at its most common in 1972, when 10,101 babies were born and it ranked #7 of 366; at its rarest in 1983, with 8,170 births at #359.

Is December 18 a common birthday?

In the United States, December 18 is the 85th most common of 366 dates, with about 11,273 births a year. That puts it among the more common birthdays.

What is the rarest December birthday?

In the United States, December 25: the rarest of all 366 dates, with about 6,546 births a year. The most common December birthday is December 28, the 6th most common of the year.

How precise is the ranking?

In the middle of the calendar it is not exact. 41 other dates are within 1% of December 18's count, spread from #57 to #98, 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 December 18 rarer in other countries?

In some. It is rarer in 19 of the 26 other countries we hold daily records for. It is at its rarest in Finland, at #346 of 366, and at its most common in Ireland, at #21.

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