Alastair
Recorded 1922–2025 · United States
Alastair was most popular in 2025, when 67 American babies were given the name — ranking #4,581 that year. In 2025 it ranked #4,581, with 67 births. Across 1880–2025 the Social Security Administration has recorded 1,364 people named Alastair.
Alastair over time
How old is the name Alastair?
Alastair first appears in Social Security Administration records in 1922, which makes it about 103 years old as a recorded American name. It has been recorded in 59 of the 104 years since.
How many people are named Alastair?
The Social Security Administration has recorded 1,364 American births named Alastair 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 1,316 are estimated to be alive today.
How many babies were named Alastair in 2025?
67 American babies were named Alastair in 2025, ranking #4,581 that year.
Is Alastair getting more or less popular?
Alastair is rising. Across 2021–2025 it averaged 59 births a year, against 35 a year across 2011–2015 — a change of +69% 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.
Is Alastair a boy’s or a girl’s name?
Across the whole record Alastair is a boy’s name — 0.0% of the 1,364 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.
How old is someone named Alastair?
Roughly 1,316 Americans named Alastair are alive today — 97% of everyone ever recorded with the name. The median is 13 years old, and half are between 6 and 27.
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.
Where Alastair is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See Alastair on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org