How common are April birthdays?
- 10,874births per day#11 of 12 months
- 8.0%of all births in the sample6,850,733 recorded
- April 4most common April date#143 of 366
- April 1quietest date that occurs every year#352 of 366
April is the 11th most common birth month of the 12, at 10,874 recorded births per day, 2.7% below an average day across 85,712,738 U.S. births from 1994–2014. Its most common date is April 4 (#143 of 366) and its quietest date that occurs every year is April 1 (#352).
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#352
- 2#216
- 3#263
- 4#143
- 5#272
- 6#340
- 7#291
- 8#280
- 9#298
- 10#300
- 11#195
- 12#239
- 13#350
- 14#307
- 15#282
- 16#260
- 17#267
- 18#221
- 19#271
- 20#327
- 21#306
- 22#284
- 23#287
- 24#293
- 25#223
- 26#281
- 27#338
- 28#311
- 29#325
- 30#322
Every April date: recorded U.S. births 1994–2014
One column per April date in calendar order, coloured by rarity tier, total recorded births 1994–2014.
Every April 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 | |
|---|---|---|---|---|
| April 4 | 236,536 | #143 | 1 in 362 | |
| April 11 | 233,219 | #195 | 1 in 368 | |
| April 2 | 232,037 | #216 | 1 in 369 | |
| April 18 | 231,942 | #221 | 1 in 370 | |
| April 25 | 231,879 | #223 | 1 in 370 | |
| April 12 | 230,877 | #239 | 1 in 371 | |
| April 16 | 229,950 | #260 | 1 in 373 | |
| April 3 | 229,823 | #263 | 1 in 373 | |
| April 17 | 229,783 | #267 | 1 in 373 | |
| April 19 | 229,650 | #271 | 1 in 373 | |
| April 5 | 229,626 | #272 | 1 in 373 | |
| April 8 | 229,415 | #280 | 1 in 374 | |
| April 26 | 229,337 | #281 | 1 in 374 | |
| April 15 | 229,306 | #282 | 1 in 374 | |
| April 22 | 229,100 | #284 | 1 in 374 | |
| April 23 | 228,914 | #287 | 1 in 374 | |
| April 7 | 228,673 | #291 | 1 in 375 | |
| April 24 | 228,662 | #293 | 1 in 375 | |
| April 9 | 228,334 | #298 | 1 in 375 | |
| April 10 | 228,294 | #300 | 1 in 375 | |
| April 21 | 227,759 | #306 | 1 in 376 | |
| April 14 | 227,723 | #307 | 1 in 376 | |
| April 28 | 227,450 | #311 | 1 in 377 | |
| April 30 | 226,221 | #322 | 1 in 379 | |
| April 29 | 226,108 | #325 | 1 in 379 | |
| April 20 | 225,694 | #327 | 1 in 380 | |
| April 27 | 224,583 | #338 | 1 in 382 | |
| April 6 | 224,055 | #340 | 1 in 383 | |
| April 13 | 218,741 | #350 | 1 in 392 | |
| April 1 | 217,042 | #352 | 1 in 395 |
April in the year
April has 7.99% of all recorded births in this sample, over 630 observed days. Months are ranked by births per day. On that measure April is #11 of 12, against September at the top (11,811 per day) and January at the bottom (10,721). Full month ranking.
Keep going
Check how rare your own birthday is →
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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