Guillermina is a distinctive girls' name in United States, ranking #14023 in 2024 with 6 recorded births. The name reached its all-time peak in 1999 with 24 births ranking #4631. Since 1996, the popularity has decreased by 70.0%. In 2024, approximately 1 in every 268,865 girls born was named Guillermina. FALLING Recent data shows the name is currently falling.