Roscoe the Raccoon sorting blank name cards above a mountain valley while exploring very rare boy names

Rare Boy Names

Very Rare Boy Names With Fewer Than 100 U.S. Births

Every name in this collection had fewer than 100 published male births in the 2025 U.S. national file.

Data note: Counts and ranks come from the U.S. Social Security Administration national files. Each spelling is counted separately, and spellings with fewer than five occurrences are not published.

Very rare boy names with 5 to 99 published births

Every name in this table had between 5 and 99 published U.S. boy births in 2025. The historical peak is the year with the highest published count for that exact spelling in the 1880-2025 national archive.

5-24 births0 names in this selected list
25-49 births0 names in this selected list
50-99 births30 names in this selected list
Name2025 births2025 rankPeak yearPeak births
Sylvan 99 #1,674 1918 103
Caelum 97 #1,690 2025 97
Viggo 97 #1,697 2025 97
Judd 96 #1,704 1970 158
Calder 94 #1,731 2016 120
Augustin 93 #1,743 2025 93
Ender 93 #1,745 2022 153
Rain 93 #1,751 2024 101
Roderick 93 #1,752 1971 1,057
Irving 90 #1,783 1918 1,533
Rune 90 #1,789 2025 90
Wolf 83 #1,902 2021 107
Cornelius 82 #1,908 1974 486
Huck 82 #1,909 2018 139
Linus 82 #1,913 2017 166
Cosmo 80 #1,934 2022 99
Journey 79 #1,951 2019 125
Rook 78 #1,972 2025 78
Arrow 77 #1,976 2018 172
Jed 76 #1,999 1978 282
Basil 74 #2,022 1924 281
Alfie 72 #2,056 2024 75
Lake 72 #2,068 2024 105
Nigel 71 #2,088 1994 448
Cai 69 #2,113 2022 108
Storm 69 #2,124 1995 165
Oswald 67 #2,161 1916 107
Kipp 66 #2,173 1964 84
Floyd 63 #2,237 1926 3,623
Roscoe 63 #2,248 1920 604

Source: U.S. Social Security Administration national baby-name files through 2025. Counts refer to the exact spelling shown. Names with fewer than five occurrences are omitted from the national public files.

Fewer than 100 is a clear threshold

We use a simple published-count rule on this page. It avoids vague claims and makes every included name comparable on the same 2025 scale.

The public file starts at five births

SSA does not publish national name entries with fewer than five births for a sex in a year. A missing name therefore cannot be separated into zero versus one to four births using this dataset.

Very rare can mean more explaining

A truly unusual name may require more spelling or pronunciation help. Decide whether that tradeoff feels worthwhile for the name you love.

How this page was researched: Popularity figures use the U.S. Social Security Administration national baby-name archive through 2025. Style judgments are editorial. We separate measurable rarity from subjective labels and explain our sourcing, corrections and name-origin standards on How We Research Boy Names.
Roscoe the Raccoon presenting blank name cards as one of his favorite boy name ideas

Roscoe's pick

Bram

Bram is genuinely rare in 2025 while still having a familiar spelling and literary history.

More names to explore

Questions parents ask

What does fewer than 100 published births tell me?

It gives you a measurable U.S. popularity reference for the exact spelling shown. It does not predict how common the name will feel in your family, city or cultural community.

Why do birth counts matter as well as rank?

Ranks can move sharply when counts are low. Showing both makes it easier to see whether a change reflects dozens of births or a much larger shift.

Does a missing count mean zero births?

No. The national public file suppresses names recorded fewer than five times for a sex in a year, so a missing count can mean zero or one to four births.

Is U.S. popularity the same as popularity elsewhere?

No. These figures describe U.S. national data. A name may be common in another country, language community or region even when it is rare here.