Boy’s name · French, Latin

Firmin

How to say it: feer-MAN · /fiʁˈmɛ̃/

French form of Latin Firminus, from 'firmus' firm, steadfast - ancient saint's name still used.

Firmin was the 3,070th most popular boys’ name in the United States in 2025, given to 0 babies (Social Security Administration). Its busiest decade was the 1920s, its births are down about 28% in ten years, and it is projected to slip to #3,542 by 2030.

Updated · SSA 2025 data, published May 2026 · Insee 2025 data, published July 2026 · How we compute these figures

#3,070for boys in 2025
1 in 118,405US babies
0born in 2025
#3,542projected for 2030
1920sits peak decade
under 1 in 200chance a classmate shares it

Key facts

Key facts about Firmin
Rank among boys’ names, 2025#3,070
Babies born in 20250
Share of births1 in 118,405
Peak decade1920s
Change over 10 years−28%
Projected rank for 2030 (estimate)#3,542
In France, 2025#889 among boys’ names, 30 births

Sources: Social Security Administration (SSA), Insee (France). How we compute these figures.

Its life, decade by decade

Firmin peaked in the 1920s and is less common today.

1900195020002020–25
Peak: 4 per million births, 1920s.

What goes with it

Nicknames

  • Fir

Honouring a Firmin in the family

In the classroom

In a class of 25 children born in 2025, the chance that another child is called Firmin is about under 1 in 200.

Around the world

This spelling is used in English, French.

In France: #889 for boys in 2025.

Famous people named Firmin

From Wikidata and Wikipedia

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