Recorded 1957–2025 · United States
Tierney was most popular in 1993, when 172 American babies were given the name — ranking #1,834 that year. In 2025 it ranked #12,329, with 15 births. Across 1880–2025 the Social Security Administration has recorded 3,979 people named Tierney.
Tierney first appears in Social Security Administration records in 1957, which makes it about 68 years old as a recorded American name. It has been recorded in 69 of the 69 years since.
The Social Security Administration has recorded 3,979 American births named Tierney 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 3,889 are estimated to be alive today.
15 American babies were named Tierney in 2025, ranking #12,329 that year.
Tierney is falling. Across 2021–2025 it averaged 24 births a year, against 64 a year across 2011–2015 — a change of -62% 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 Tierney is a girl’s name — 99.4% of the 3,979 Americans given it were girls and 0.6% were boys. In births since 2016 it is 100% girls and 0% 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 3,889 Americans named Tierney are alive today — 98% of everyone ever recorded with the name. The median is 29 years old, and half are between 19 and 37.
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 Tierney on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org