What was the most common birthday in 2007?

Published by Birthday Traffic · September 15, 2026 · Sources and method

December 27most births in 2007a Thursday, 15,590 births
December 25fewest births in 2007a Tuesday, 6,624 births
Augustbusiest month per day12,786 births per day
Tuesdaybusiest weekday13,815 per day against 7,761 on Sunday

In 2007 the United States recorded 4,380,784 births over 365 days, 12,002 on an average day. The busiest single date was December 27, a Thursday, with 15,590 births; the quietest was December 25, a Tuesday, with 6,624. Within one year every date has one weekday, so the weekday column below is a fact of that date.

Every day of 2007: recorded U.S. births

Every day of 2007 in calendar order as one line, with the busiest and quietest dates marked and the year’s average day drawn across it.

The regular dips are weekends. The deepest dips are fixed holidays.

The busiest dates of 2007

Dates of 2007 with the most recorded U.S. births
Date	Weekday	Births	% of an average day
December 27	Thursday	15,590	129.9
December 28	Friday	15,555	129.6
September 5	Wednesday	15,440	128.6
December 20	Thursday	15,214	126.8
September 18	Tuesday	15,194	126.6
September 20	Thursday	15,139	126.1
September 6	Thursday	15,010	125.1
December 18	Tuesday	14,983	124.8
September 12	Wednesday	14,960	124.6
August 28	Tuesday	14,959	124.6

The quietest dates of 2007

Dates of 2007 with the fewest recorded U.S. births
Date	Weekday	Births	% of an average day
December 25	Tuesday	6,624	55.2
April 8	Sunday	6,903	57.5
April 15	Sunday	7,225	60.2
May 13	Sunday	7,260	60.5
January 1	Monday	7,322	61.0
April 1	Sunday	7,372	61.4
March 11	Sunday	7,390	61.6
December 23	Sunday	7,398	61.6
April 29	Sunday	7,409	61.7
May 6	Sunday	7,476	62.3

2007 by weekday and by month

Weekend days in 2007 recorded 62% of a weekday’s births per day. The quietest dates above are mostly weekend days and fixed holidays; the busiest are weekdays in late summer. The counts show the association.

2007: births per day by weekday

Seven columns, Monday to Sunday, average recorded births per day in 2007.

2007: births per day by weekday
Weekday	Days	Births per day
Tuesday	52	13,815
Thursday	52	13,783
Wednesday	52	13,758
Friday	52	13,520
Monday	53	12,444
Saturday	52	8,926
Sunday	52	7,761

2007: births per day by month
Month	Births	Births per day
August	396,355	12,786
September	372,774	12,426
July	384,861	12,415
June	363,486	12,116
October	375,272	12,106
November	359,335	11,978
May	367,491	11,855
February	331,617	11,843
March	365,888	11,803
January	360,521	11,630
December	360,203	11,619
April	342,981	11,433

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Sources, method and limits

Source for 2007: Social Security Administration daily births for the United States, as compiled by FiveThirtyEight (CC BY 4.0). The 2000–2003 overlap between the two files is taken from the SSA file only. Weekday is taken from the record’s calendar date. Ranks within a year compare single days.

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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