Recorded 1902–2025 · United States
Cy was most popular in 2010, when 117 American babies were given the name — ranking #3,150 that year. In 2025 it ranked #5,471, with 52 births. Across 1880–2025 the Social Security Administration has recorded 3,921 people named Cy.
Cy first appears in Social Security Administration records in 1902, which makes it about 123 years old as a recorded American name. It has been recorded in 112 of the 124 years since.
The Social Security Administration has recorded 3,921 American births named Cy 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 3,488 are estimated to be alive today.
52 American babies were named Cy in 2025, ranking #5,471 that year.
Cy is falling. Across 2021–2025 it averaged 59 births a year, against 88 a year across 2011–2015 — a change of -32% 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 Cy is a boy’s name — 0.6% of the 3,921 Americans given it were girls and 99.4% were boys. In births since 2016 it is 2% girls and 98% 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 3,488 Americans named Cy are alive today — 89% of everyone ever recorded with the name. The median is 22 years old, and half are between 14 and 39.
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.
How much more common the name is in each state than across the country as a whole.
See Cy on the interactive charts
About · Privacy · Contact
Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org