Recorded 1917–2024 · United States
Terrill was most popular in 1975, when 132 American babies were given the name — ranking #1,637 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 5,079 people named Terrill.
Terrill first appears in Social Security Administration records in 1917, which makes it about 108 years old as a recorded American name. It has been recorded in 101 of the 109 years since.
The Social Security Administration has recorded 5,079 American births named Terrill 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 4,120 are estimated to be alive today.
Terrill was not recorded in 2025. The SSA withholds any name given to fewer than five babies in a year, so fewer than five American babies were given it.
Terrill is too rare for a direction to mean much. It averaged 9 births a year across 2021–2025 against 18 a year a decade earlier — at these counts a single baby moves the percentage, and any year under five births is withheld at source.
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 Terrill is mostly a boy’s name — 14.1% of the 5,079 Americans given it were girls and 85.9% 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 4,120 Americans named Terrill are alive today — 81% of everyone ever recorded with the name. The median is 50 years old, and half are between 37 and 65.
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 Terrill on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org