Recorded 1912–2025 · United States
Demetrius was most popular in 1991, when 1,079 American babies were given the name — ranking #511 that year. In 2025 it ranked #2,533, with 164 births. Across 1880–2025 the Social Security Administration has recorded 37,791 people named Demetrius.
Demetrius first appears in Social Security Administration records in 1912, which makes it about 113 years old as a recorded American name. It has been recorded in 97 of the 114 years since.
The Social Security Administration has recorded 37,791 American births named Demetrius 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 35,588 are estimated to be alive today.
164 American babies were named Demetrius in 2025, ranking #2,533 that year.
Demetrius is falling. Across 2021–2025 it averaged 231 births a year, against 398 a year across 2011–2015 — a change of -42% 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 Demetrius is a boy’s name — 4.6% of the 37,791 Americans given it were girls and 95.4% 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 35,588 Americans named Demetrius are alive today — 94% of everyone ever recorded with the name. The median is 35 years old, and half are between 23 and 47.
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 Demetrius on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org