Recorded 1884–2025 · United States
Rob was most popular in 1963, when 555 American babies were given the name — ranking #730 that year. In 2025 it ranked #20,040, with 7 births. Across 1880–2025 the Social Security Administration has recorded 8,775 people named Rob.
Rob first appears in Social Security Administration records in 1884, which makes it about 141 years old as a recorded American name. It has been recorded in 116 of the 142 years since.
The Social Security Administration has recorded 8,775 American births named Rob 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 6,899 are estimated to be alive today.
7 American babies were named Rob in 2025, ranking #20,040 that year.
Rob is too rare for a direction to mean much. It averaged 8 births a year across 2021–2025 against 11 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.
Across the whole record Rob is a boy’s name — 0.0% of the 8,775 Americans given it were girls and 100.0% were boys. In births since 2016 it is 0% girls and 100% 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 6,899 Americans named Rob are alive today — 79% of everyone ever recorded with the name. The median is 61 years old, and half are between 55 and 65. That is a narrow band: Rob 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.
How much more common the name is in each state than across the country as a whole.
See Rob on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org