What was the most common birthday in Metropolitan France in 2015?

Name: Metropolitan France births by day, 2015
Creator: INSEE
Published: 2026-09-15

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

September 22most births in 2015a Tuesday, 2,450 births
March 22fewest births in 2015a Sunday, 1,615 births
Septemberbusiest month per day2,182 births per day
84%weekend levelSaturday and Sunday against a weekday, per day; Tuesday busiest

In 2015, Metropolitan France recorded 760,421 births over 365 days, 2,083 on an average day. The busiest single date was September 22, a Tuesday, with 2,450 births; the quietest was March 22, a Sunday, with 1,615. September was the busiest month per day and Tuesday the busiest weekday; a Saturday or Sunday recorded about 84% of a weekday’s births. Within one year each date has one weekday, so every table here names it. The multi-year ranking for Metropolitan France is on its own page.

Every day of 2015 in Metropolitan France: recorded births

Every day of 2015 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 2015

Dates of 2015 with the most recorded births in Metropolitan France
Date	Weekday	Births	% of an average day
September 22	Tuesday	2,450	117.6
September 15	Tuesday	2,439	117.1
May 12	Tuesday	2,397	115.1
July 16	Thursday	2,396	115.0
September 29	Tuesday	2,385	114.5
September 17	Thursday	2,358	113.2
October 6	Tuesday	2,358	113.2
July 23	Thursday	2,354	113.0
September 14	Monday	2,352	112.9
September 16	Wednesday	2,346	112.6

The quietest dates of 2015

Dates of 2015 with the fewest recorded births in Metropolitan France
Date	Weekday	Births	% of an average day
March 22	Sunday	1,615	77.5
April 12	Sunday	1,620	77.8
December 25	Friday	1,627	78.1
March 29	Sunday	1,627	78.1
March 15	Sunday	1,667	80.0
April 26	Sunday	1,688	81.0
March 28	Saturday	1,690	81.1
December 6	Sunday	1,701	81.6
April 5	Sunday	1,705	81.8
December 27	Sunday	1,707	81.9

2015 by weekday and by month

Metropolitan France, 2015: births per day by weekday

Seven columns, Monday to Sunday, average recorded births per day in 2015.

Metropolitan France, 2015: births per day by weekday
Weekday	Days	Births per day
Tuesday	52	2,227
Wednesday	52	2,182
Thursday	53	2,181
Friday	52	2,181
Monday	52	2,151
Saturday	52	1,877
Sunday	52	1,783

Metropolitan France, 2015: births per day by month
Month	Births	Births per day
September	65,449	2,182
July	66,701	2,152
June	63,984	2,133
October	65,888	2,125
August	65,784	2,122
January	64,596	2,084
May	64,144	2,069
November	61,899	2,063
February	57,525	2,054
December	63,637	2,053
April	59,699	1,990
March	61,115	1,971

Keep going

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Sources, method and limits

Source: INSEE, T79jnais, daily births in metropolitan France, open licence of the publisher. Metropolitan France only; the whole-of-France detail file behind the 2025 page is a separate series. 760,421 births over 365 days; the weekday of each day is taken from the calendar date. One year, one country, one series.

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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