Recorded 1934–2025 · United States
Tammy was most popular in 1963, when 21,246 American babies were given the name — ranking #33 that year. In 2025 it ranked #6,410, with 41 births. Across 1880–2025 the Social Security Administration has recorded 333,407 people named Tammy.
Tammy first appears in Social Security Administration records in 1934, which makes it about 91 years old as a recorded American name. It has been recorded in 91 of the 92 years since.
The Social Security Administration has recorded 333,407 American births named Tammy 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 304,132 are estimated to be alive today.
41 American babies were named Tammy in 2025, ranking #6,410 that year.
Tammy is falling. Across 2021–2025 it averaged 32 births a year, against 53 a year across 2011–2015 — a change of -40% 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 Tammy is a girl’s name — 99.6% of the 333,407 Americans given it were girls and 0.4% 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 304,132 Americans named Tammy are alive today — 91% of everyone ever recorded with the name. The median is 59 years old, and half are between 54 and 63. That is a narrow band: Tammy arrived and faded within about a decade rather than staying in steady use.
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.
English · short form of Tamara or Thomasina
How much more common the name is in each state than across the country as a whole.
See Tammy on the interactive charts
About · Privacy · Contact
Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org