Recorded 1912–1999 · United States
Delois was most popular in 1948, when 321 American babies were given the name — ranking #816 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 8,622 people named Delois.
Delois first appears in Social Security Administration records in 1912, which makes it about 113 years old as a recorded American name. It has been recorded in 83 of the 114 years since. It was last recorded in 1999.
The Social Security Administration has recorded 8,622 American births named Delois 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 5,020 are estimated to be alive today.
Delois was not recorded in 2025. The SSA withholds any name given to fewer than five babies in a year, so fewer than five American babies were given it.
Across the whole record Delois is a girl’s name — 98.6% of the 8,622 Americans given it were girls and 1.4% were 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 5,020 Americans named Delois are alive today — 58% of everyone ever recorded with the name. The median is 74 years old, and half are between 67 and 80.
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 Delois on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org