How common are August birthdays?
- 11,712births per day#2 of 12 months
- 8.9%of all births in the sample7,624,626 recorded
- August 8most common August date#15 of 366
- August 3quietest date that occurs every year#116 of 366
August is the 2nd most common birth month of the 12, at 11,712 recorded births per day, 4.8% above an average day across 85,712,738 U.S. births from 1994–2014. Its most common date is August 8 (#15 of 366) and its quietest date that occurs every year is August 3 (#116).
Every date is coloured by the same six rarity tiers the reveal uses; the small number is its rank of 366 from most common.
- 1#38
- 2#74
- 3#116
- 4#82
- 5#66
- 6#73
- 7#70
- 8#15
- 9#49
- 10#96
- 11#68
- 12#44
- 13#98
- 14#51
- 15#21
- 16#36
- 17#87
- 18#57
- 19#63
- 20#37
- 21#60
- 22#30
- 23#61
- 24#101
- 25#78
- 26#64
- 27#46
- 28#26
- 29#20
- 30#35
- 31#85
Every August date: recorded U.S. births 1994–2014
One column per August date in calendar order, coloured by rarity tier, total recorded births 1994–2014.
Every August date, ranked
Ranked by total recorded births across the 21 years, the same measure as the site-wide rank of 366.
| Date | Total births | Rank of 366 | Odds | |
|---|---|---|---|---|
| August 8 | 252,122 | #15 | 1 in 340 | |
| August 29 | 251,519 | #20 | 1 in 341 | |
| August 15 | 251,448 | #21 | 1 in 341 | |
| August 28 | 250,102 | #26 | 1 in 343 | |
| August 22 | 249,378 | #30 | 1 in 344 | |
| August 30 | 248,760 | #35 | 1 in 345 | |
| August 16 | 248,450 | #36 | 1 in 345 | |
| August 20 | 248,334 | #37 | 1 in 345 | |
| August 1 | 248,312 | #38 | 1 in 345 | |
| August 12 | 247,596 | #44 | 1 in 346 | |
| August 27 | 247,421 | #46 | 1 in 346 | |
| August 9 | 246,993 | #49 | 1 in 347 | |
| August 14 | 246,621 | #51 | 1 in 348 | |
| August 18 | 246,091 | #57 | 1 in 348 | |
| August 21 | 245,635 | #60 | 1 in 349 | |
| August 23 | 245,616 | #61 | 1 in 349 | |
| August 19 | 245,213 | #63 | 1 in 350 | |
| August 26 | 244,797 | #64 | 1 in 350 | |
| August 5 | 244,646 | #66 | 1 in 350 | |
| August 11 | 244,532 | #68 | 1 in 351 | |
| August 7 | 244,395 | #70 | 1 in 351 | |
| August 6 | 244,227 | #73 | 1 in 351 | |
| August 2 | 244,201 | #74 | 1 in 351 | |
| August 25 | 243,925 | #78 | 1 in 351 | |
| August 4 | 243,696 | #82 | 1 in 352 | |
| August 31 | 243,440 | #85 | 1 in 352 | |
| August 17 | 243,341 | #87 | 1 in 352 | |
| August 10 | 242,075 | #96 | 1 in 354 | |
| August 13 | 241,760 | #98 | 1 in 355 | |
| August 24 | 241,266 | #101 | 1 in 355 | |
| August 3 | 238,714 | #116 | 1 in 359 |
August in the year
August has 8.90% of all recorded births in this sample, over 651 observed days. Months are ranked by births per day. On that measure August is #2 of 12, against September at the top (11,811 per day) and January at the bottom (10,721). Full month ranking.
Keep going
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Sources, method and limits
Main ranking: 85,712,738 recorded U.S. births on 7,670 calendar dates, 1994–2014. CDC/NCHS daily counts for 1994–1999 and Social Security Administration daily counts for 2000–2014, as compiled by FiveThirtyEight and attributed under CC BY 4.0. The overlapping years 2000–2003 are counted once.
Ranks compare totals across the 366 observed month-and-day dates. February 29 occurred 5 times in this window; every other date occurred 21 times, so per-occurrence figures are used wherever seasonality is compared.
Every figure above comes from the administrative records named here, at the granularity those records publish: a day, a month or a year. Coverage and definitions differ between countries and eras, so two sources are combined only where their documentation states the windows are separate, and the page where that happens says so.
Full method, leap-day treatment and definitions.
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