July 20most common birthdayindex 107.9, 100 is an average day
December 25least common, leap day asideindex 77.2
Julybusiest month per dayindex 104.3; March quietest at 95.8
83%weekend levelSaturday and Sunday against a weekday, per day, 2004–2023
Across the 20 complete years 2004–2023 in the INSEE daily series, 15,056,520 recorded births, the most common birthday in Metropolitan France is July 20, at 107.9 where 100 is an average day, and the least common date that occurs every year is December 25, at 77.2. July is the busiest month per day and Tuesday the busiest weekday; a Saturday or Sunday records about 83% of a weekday’s births. Every figure on this page comes from this one national series.
All 366 dates, most to least common
All 366 dates from most to least common, France, 2004–2023
Births per occurrence for every calendar date in Metropolitan France, sorted from the busiest to the quietest, coloured by the six rarity tiers applied to this country’s own values.
Very common 91Common 92Uncommon 147Rare 18Very rare 15Super rare 3September 9, the most common date in the United States, is marked where it stands in France.
France, every date of the year: births per occurrence, index (100 = average day), 2004–2023
Every calendar date in order as one line, births per occurrence indexed to the average day, with the busiest and quietest dates marked.
The deepest dips are fixed public holidays; the broad rise and fall across the year is the season.
February 29 occurred in 5 of these 20 years (2004, 2008, 2012, 2016, 2020); measured per occurrence it ranks #361 of 366 at index 88.9. Each date links to its U.S. page, which shows this country’s matched-window rank for it.
The calendar, date by date
Every date in its rarity tier for France, the six colours of the reveal applied to this country’s own per-occurrence values, with its rank of 366 in the corner.
Twelve months as births per observed day, with the busiest and quietest labelled.
July leads at index 104.3; March is quietest at 95.8.
Months in France by births per day, 2004–2023
Month
Births per day
Index (100 = average day)
January
2,018
97.9
February
2,018
97.9
March
1,975
95.8
April
1,980
96.1
May
2,042
99.1
June
2,080
100.9
July
2,150
104.3
August
2,113
102.5
September
2,140
103.8
October
2,111
102.4
November
2,066
100.2
December
2,036
98.8
Births per day by weekday in France, 2004–2023
Monday to Sunday as births per observed day, with the busiest and quietest labelled.
Tuesday leads; Sunday is quietest. The weekday is taken from the calendar date of each row.
Weekdays in France by births per day, 2004–2023
Weekday
Births per day
Index (100 = average day)
Monday
2,116
102.6
Tuesday
2,202
106.8
Wednesday
2,178
105.7
Thursday
2,172
105.4
Friday
2,182
105.9
Saturday
1,835
89.0
Sunday
1,743
84.6
The weekend gap, year by year
Saturday and Sunday births per day as a percentage of Monday-to-Friday births per day in the same year: 78% in 2004 and 85% in 2023. A change in this line is a change in when births are recorded across the week.
Weekend births as a percentage of weekday births, France, 2004–2023
Saturday and Sunday births per day against Monday-to-Friday births per day in the same year, one point per year.
Each year against its own weekday level.
Births by year in France, 2004–2023, with the weekend level
Year
Recorded births
Weekend births per day, % of weekday
2004
767,816
78.4%
2005
774,355
78.3%
2006
796,896
79.0%
2007
785,985
79.9%
2008
796,044
80.8%
2009
793,420
80.7%
2010
802,224
81.5%
2011
792,996
81.4%
2012
790,290
82.3%
2013
781,621
83.2%
2014
781,167
83.4%
2015
760,421
83.8%
2016
744,697
84.4%
2017
730,242
84.0%
2018
719,737
85.1%
2019
714,029
85.5%
2020
696,664
85.0%
2021
701,819
84.7%
2022
686,564
84.6%
2023
639,533
85.0%
Year by year
Each complete year of the series on its own page, with the weekday each date fell on:
Source: INSEE, T79jnais, daily births in metropolitan France, open licence of the publisher; metropolitan France only. 20,454 daily rows, of which the 20 most recent complete years (2004–2023, 7,305 days, 15,056,520 births) are ranked here. The file also holds 1968–2003; the ranking uses the most recent twenty complete years so that the answer describes the recent calendar, the same rule for every country hub.
Ranks compare births per occurrence, so February 29 is judged on the years it occurred in. Equal values share a rank. The six tier colours apply the reveal’s rule to this country’s own values; they are a reading aid.
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.
