Allistair
Allistair was given to 6 boys in 2025, #10,753 among boys’ names; 90 Americans have been recorded with it since 2006 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Allistair by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Allistair mean?
Wiktionary, English section
Allistair is “a male given name from Scottish Gaelic.” Its etymology gives the sense “Alexander” (Alasdair).
From Scottish Gaelic Alasdair (“Alexander”). A rare spelling of Alistair.
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Allistair?
#10,753 among boys’ names, 2025
Allistair fell from #8,773 in 2015 to #10,753 in 2025 among boys’ names; its share of boys born fell from 4.2 to 3.5 per million.
11 babies in 2019, the peak
Allistair peaked in 2019, when 11 boys were given it, #7,194 among boys’ names. The 6 births of 2025 are 55% of that peak.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 6 | #10,753 | 3.5 |
| 2023 | 7 | #9,800 | 4.1 |
| 2022 | 8 | #9,019 | 4.6 |
| 2021 | 6 | #10,858 | 3.4 |
| 2020 | 6 | #10,656 | 3.5 |
| 2019 | 11 | #7,194 | 6.1 |
| 2018 | 6 | #10,825 | 3.3 |
| 2017 | 6 | #10,840 | 3.2 |
| 2016 | 9 | #8,174 | 4.7 |
| 2015 | 8 | #8,773 | 4.2 |
Every recorded year (13)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2014 | 7 | #9,682 | 3.6 |
| 2011 | 5 | #12,362 | 2.6 |
| 2006 | 5 | #12,124 | 2.4 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Allistair a boy’s or a girl’s name?
Allistair has been recorded only for boys: SSA lists no girls with the name in 13 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Allistair: the SSA national file counts each sex separately.
How many people are named Allistair, and how old are they?
An estimated 89 Americans named Allistair and born in the U.S. are alive in 2026, too few to state an age range. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 152 people named Allistair (5 women and girls, 147 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 58 born in the U.S. The Census count is 2.6 times that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Names spelled alike
Of these 5 names spelled alike, given to 6,976 babies since 1880, Allistair is the fifth most given (1.3% of them). In 2025 it was given to 6 of their 391 babies (1.5%), again the fifth most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Allistair
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Allistair and names like it
- Compare Allistair and AlistairBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2010sAllistair peaked in 2019.
- Scottish Gaelic namesWiktionary’s origin for Allistair: every such name, by how often it is given.
- The top names of 2019The year the most babies were named Allistair.
- Names starting with AMost given first.