What was the most common birthday in Metropolitan France in 2021?

Name: Metropolitan France births by day, 2021
Creator: INSEE
Published: 2026-09-15

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

October 29most births in 2021a Friday, 2,289 births
January 23fewest births in 2021a Saturday, 1,414 births
Septemberbusiest month per day2,059 births per day
85%weekend levelSaturday and Sunday against a weekday, per day; Tuesday busiest

In 2021, Metropolitan France recorded 701,819 births over 365 days, 1,923 on an average day. The busiest single date was October 29, a Friday, with 2,289 births; the quietest was January 23, a Saturday, with 1,414. September was the busiest month per day and Tuesday the busiest weekday; a Saturday or Sunday recorded about 85% 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 2021 in Metropolitan France: recorded births

Every day of 2021 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 2021

Dates of 2021 with the most recorded births in Metropolitan France
Date	Weekday	Births	% of an average day
October 29	Friday	2,289	119.0
July 20	Tuesday	2,288	119.0
September 21	Tuesday	2,253	117.2
August 11	Wednesday	2,241	116.5
August 6	Friday	2,236	116.3
October 19	Tuesday	2,228	115.9
September 17	Friday	2,226	115.8
October 12	Tuesday	2,223	115.6
September 30	Thursday	2,221	115.5
September 10	Friday	2,220	115.5

The quietest dates of 2021

Dates of 2021 with the fewest recorded births in Metropolitan France
Date	Weekday	Births	% of an average day
January 23	Saturday	1,414	73.5
January 10	Sunday	1,416	73.6
January 3	Sunday	1,427	74.2
January 9	Saturday	1,434	74.6
January 24	Sunday	1,438	74.8
January 2	Saturday	1,439	74.8
January 17	Sunday	1,459	75.9
January 30	Saturday	1,468	76.3
January 16	Saturday	1,478	76.9
January 1	Friday	1,478	76.9

2021 by weekday and by month

Metropolitan France, 2021: births per day by weekday

Seven columns, Monday to Sunday, average recorded births per day in 2021.

Metropolitan France, 2021: births per day by weekday
Weekday	Days	Births per day
Tuesday	52	2,051
Friday	53	2,027
Wednesday	52	2,018
Thursday	52	2,008
Monday	52	1,947
Saturday	52	1,733
Sunday	52	1,672

Metropolitan France, 2021: births per day by month
Month	Births	Births per day
September	61,774	2,059
October	63,639	2,053
July	62,690	2,022
August	62,341	2,011
November	59,856	1,995
December	61,105	1,971
June	57,482	1,916
April	56,886	1,896
March	57,877	1,867
May	57,770	1,864
February	49,209	1,757
January	51,190	1,651

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. 701,819 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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