Ildefonso

Boy · recorded 1917–2022

  • 2022last recorded
  • 1976best year

Most popular in 1976.

Last recorded in 2022. Fewer than five boys a year have been given it since, so it's a true rarity.

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Meaning

We don’t have a verified meaning for Ildefonso.

We only publish meanings we can cite to a source you could check yourself. Most sites will give you one anyway; the ones you find elsewhere are often copied between sites without verification.

Its story

Popularity since 1917

051019171943197019962022

Hover over or drag across the chart to see any year.

Per million boys born. Years with fewer than five births are not in the record, so the line breaks rather than dropping to zero.
See the 53 recorded years as a table
Ildefonso, per million boys born. Years absent from the table had fewer than five births.
YearPer million
19176
19245
19285
19316
19404
19466
19474
19485
19524
19545
19593
19604
19614
19624
19633
19645
19653
19666
19674
19683
19703
19724
19737
19744
19755
197610
19785
19794
19803
19814
19826
19837
19843
19854
19864
19873
19883
19894
19903
19926
19935
19943
19964
19975
19994
20013
20034
20043
20053
20063
20082
20113
20223

Where it’s loved

Most popular in these states

Ildefonso isn’t concentrated in any one state. Either it’s spread evenly, or no state reaches the 25 births over three years needed before a rate means anything.

More like it

More like Ildefonso

Ildefonso doesn’t share a sound pattern with any other boys name in this corpus — about 1 name in 100 doesn’t. There’s nothing to compare it to yet.

The numbers

Every figure

Births in 2022
5
Rank in 2022
#12,330
How rare
1 in 349,201 boys
Since 1917
392

Ildefonso was last recorded in 2022. Fewer than five boys have been given the name in any year since, which is the point below which the record stops reporting.

Most popular in 1976, at 10 per million boys born.

There isn’t enough data for a ten-year trend: Ildefonso doesn’t appear in both ends of that window.

Figures from the US Social Security Administration’s 2025 release. How these numbers are made.