Recorded 1964–2025 · United States
Lyndsey was most popular in 1990, when 687 American babies were given the name — ranking #734 that year. In 2025 it ranked #12,918, with 14 births. Across 1880–2025 the Social Security Administration has recorded 14,420 people named Lyndsey.
Lyndsey first appears in Social Security Administration records in 1964, which makes it about 61 years old as a recorded American name. It has been recorded in 57 of the 62 years since.
The Social Security Administration has recorded 14,420 American births named Lyndsey 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 14,111 are estimated to be alive today.
14 American babies were named Lyndsey in 2025, ranking #12,918 that year.
Lyndsey is falling. Across 2021–2025 it averaged 18 births a year, against 66 a year across 2011–2015 — a change of -72% 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 Lyndsey is a girl’s name — 99.8% of the 14,420 Americans given it were girls and 0.2% 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 14,111 Americans named Lyndsey are alive today — 98% of everyone ever recorded with the name. The median is 35 years old, and half are between 28 and 41.
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.
A variant of Lindsey · Old English · a place name, "Lincoln's island"
How much more common the name is in each state than across the country as a whole.
See Lyndsey on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org