Marni
Recorded 1946–2025 · United States
Marni was most popular in 1969, when 253 American babies were given the name — ranking #1,087 that year. In 2025 it ranked #8,077, with 29 births. Across 1880–2025 the Social Security Administration has recorded 3,420 people named Marni.
Marni over time
How old is the name Marni?
Marni first appears in Social Security Administration records in 1946, which makes it about 79 years old as a recorded American name. It has been recorded in 79 of the 80 years since.
How many people are named Marni?
The Social Security Administration has recorded 3,420 American births named Marni 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 3,219 are estimated to be alive today.
How many babies were named Marni in 2025?
29 American babies were named Marni in 2025, ranking #8,077 that year.
Is Marni getting more or less popular?
Marni is too rare for a direction to mean much. It averaged 19 births a year across 2021–2025 against 14 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.
Is Marni a boy’s or a girl’s name?
Across the whole record Marni is a girl’s name — 99.9% of the 3,420 Americans given it were girls and 0.1% 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 Marni?
Roughly 3,219 Americans named Marni are alive today — 94% of everyone ever recorded with the name. The median is 53 years old, and half are between 43 and 57.
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 Marni is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See Marni on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org