What was the most common birthday in 1997?

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

December 30most births in 1997a Tuesday, 13,521 births
December 25fewest births in 1997a Thursday, 7,055 births
Julybusiest month per day11,178 births per day
Tuesdaybusiest weekday12,104 per day against 7,778 on Sunday

In 1997 the United States recorded 3,880,894 births over 365 days, 10,633 on an average day. The busiest single date was December 30, a Tuesday, with 13,521 births; the quietest was December 25, a Thursday, with 7,055. Within one year every date has one weekday, so the weekday column below is a fact of that date.

Every day of 1997: recorded U.S. births

Every day of 1997 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 1997

Dates of 1997 with the most recorded U.S. births
Date	Weekday	Births	% of an average day
December 30	Tuesday	13,521	127.2
July 1	Tuesday	13,003	122.3
July 22	Tuesday	12,928	121.6
July 8	Tuesday	12,927	121.6
September 16	Tuesday	12,891	121.2
July 2	Wednesday	12,820	120.6
September 17	Wednesday	12,793	120.3
September 3	Wednesday	12,720	119.6
August 12	Tuesday	12,632	118.8
July 15	Tuesday	12,625	118.7

The quietest dates of 1997

Dates of 1997 with the fewest recorded U.S. births
Date	Weekday	Births	% of an average day
December 25	Thursday	7,055	66.4
April 6	Sunday	7,207	67.8
October 12	Sunday	7,358	69.2
April 27	Sunday	7,410	69.7
March 30	Sunday	7,458	70.1
May 11	Sunday	7,493	70.5
December 14	Sunday	7,504	70.6
January 12	Sunday	7,524	70.8
January 26	Sunday	7,526	70.8
January 19	Sunday	7,527	70.8

1997 by weekday and by month

Weekend days in 1997 recorded 71% 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.

1997: births per day by weekday

Seven columns, Monday to Sunday, average recorded births per day in 1997.

1997: births per day by weekday
Weekday	Days	Births per day
Tuesday	52	12,104
Wednesday	53	11,723
Friday	52	11,640
Thursday	52	11,631
Monday	52	10,861
Saturday	52	8,670
Sunday	52	7,778

1997: births per day by month
Month	Births	Births per day
July	346,506	11,178
September	333,600	11,120
August	339,122	10,939
June	321,867	10,729
May	330,331	10,656
December	329,335	10,624
October	328,657	10,602
April	314,230	10,474
February	291,541	10,412
March	321,212	10,362
November	307,282	10,243
January	317,211	10,233

Keep going

Check how rare your own birthday is →

Sources, method and limits

Source for 1997: CDC/NCHS daily births for the United States, as compiled by FiveThirtyEight (CC BY 4.0). Years before 2000 come from the CDC/NCHS file; 2000 onward from the SSA file, so a comparison across that line is also a change of source. 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.

Want the data? Ask for it.