Recorded 1909–2025 · United States
Arnulfo was most popular in 1992, when 119 American babies were given the name — ranking #2,314 that year. In 2025 it ranked #8,077, with 29 births. Across 1880–2025 the Social Security Administration has recorded 6,316 people named Arnulfo.
Arnulfo first appears in Social Security Administration records in 1909, which makes it about 116 years old as a recorded American name. It has been recorded in 114 of the 117 years since.
The Social Security Administration has recorded 6,316 American births named Arnulfo between 1880 and 2025. That is recorded US births, not a world population — it counts people issued a Social Security number at birth in the United States. Of those, roughly 4,937 are estimated to be alive today.
29 American babies were named Arnulfo in 2025, ranking #8,077 that year.
Arnulfo is falling. Across 2021–2025 it averaged 22 births a year, against 39 a year across 2011–2015 — a change of -44% over the decade.
Measured on recorded births. American births overall have fallen since 2007, so most established names lose births over any recent decade — a name can shed births and still hold its rank. Compare the rank above, which is measured against the other names of the same year.
Across the whole record Arnulfo is a boy’s name — 0.0% of the 6,316 Americans given it were girls and 100.0% were boys. In births since 2016 it is 0% girls and 100% boys.
Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.
Roughly 4,937 Americans named Arnulfo are alive today — 78% of everyone ever recorded with the name. The median is 40 years old, and half are between 26 and 56. That is a wide band, the mark of a name in steady use across generations rather than a passing fashion.
An estimate, not a count. Recorded births are carried forward through the Social Security Administration’s 2023 period life table, by age and sex. That table describes mortality in one recent year, so it credits the oldest cohorts with today’s survival rather than the harsher rates they actually lived through — the further back a name peaked, the more this will overstate how many remain. It counts people issued a Social Security number at birth, not immigrants who arrived later.
How much more common the name is in each state than across the country as a whole.
See Arnulfo on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org