Mattilyn
Recorded 1994–2025 · United States
Mattilyn was most popular in 2012, when 40 American babies were given the name — ranking #6,583 that year. In 2025 it ranked #12,329, with 15 births. Across 1880–2025 the Social Security Administration has recorded 666 people named Mattilyn.
Mattilyn over time
How old is the name Mattilyn?
Mattilyn first appears in Social Security Administration records in 1994, which makes it about 31 years old as a recorded American name. It has been recorded in 30 of the 32 years since.
How many people are named Mattilyn?
The Social Security Administration has recorded 666 American births named Mattilyn 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 660 are estimated to be alive today.
How many babies were named Mattilyn in 2025?
15 American babies were named Mattilyn in 2025, ranking #12,329 that year.
Is Mattilyn getting more or less popular?
Mattilyn is falling. Across 2021–2025 it averaged 17 births a year, against 33 a year across 2011–2015 — a change of -48% 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 Mattilyn a boy’s or a girl’s name?
Across the whole record Mattilyn is a girl’s name — 100.0% of the 666 Americans given it were girls and 0.0% 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.
How old is someone named Mattilyn?
Roughly 660 Americans named Mattilyn are alive today — 99% of everyone ever recorded with the name. The median is 14 years old, and half are between 8 and 20. That is a narrow band because Mattilyn is a young name — it only became common recently, so almost everyone carrying it is still a child or a young adult.
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.
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See Mattilyn on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org