Ildefonso
boy nameIldefonso entered the US charts in 1917, peaked at #2403 in 1946, is rarely given today — a rare gem few children share.
Popularity 1917–2025
—
rank today
#2403
peak (1946)
0
babies in 2025
rare
a rare gem few children share
Rank by decade
| Decade | Average rank |
|---|---|
| 1910s | #3545 |
| 1920s | #3782 |
| 1930s | #3390 |
| 1940s | #2937 |
| 1950s | #3054 |
| 1960s | #3206 |
| 1970s | #4044 |
| 1980s | #5183 |
| 1990s | #6481 |
| 2000s | #10655 |
| 2010s | #12287 |
| 2020s | #12330 |
Living bearers
About 300 people named Ildefonso are estimated to be alive in the US today.
The typical Ildefonso alive today was born around 1976, making them about 49 years old.
Estimated from official SSA birth records and life tables.
Names similar in popularity
Frequently asked questions
- How popular is the name Ildefonso in 2025?
- Ildefonso is rarely given in the US today — it does not rank in the top 2000 boy names.
- When was the name Ildefonso most popular?
- Ildefonso peaked in 1946, reaching #2403 among US boy names.
- Will my child share the name Ildefonso with classmates?
- Ildefonso will almost certainly be the only one in school.
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