Quick answers about Guillermina
How many people are named Guillermina?
An estimated 1,419 living Americans are named Guillermina.
How rare is Guillermina?
Guillermina fell below the SSA's 5-birth reporting floor in 2025. It is extremely rare as a new baby name.
How old is the typical Guillermina?
The median age of a living American named Guillermina is approximately 49 years, with most bearers falling between 35 and 61 years old.
Is Guillermina still popular?
Not especially. Guillermina has been declining since its 1966 peak and registered 0 births in 2025.
Where is Guillermina most common?
Guillermina has its strongest geographic signal in Texas, where it appears 11.5× more often than the national baseline.
1918Peak 19662025
Where it lives now
Guillermina is most concentrated in Texas — about 8.7× the national rate in the 1950s.
States where Guillermina is given more often than the national average — its present-day heartland.
3×+
2×+
1.5×+
1.2×+
~ national
