Given name & surname
Decimus
“the tenth-born child”
Decimus is used as a given name and a surname. One Latin interpretation is “the tenth-born child.”
Original LatinD.
Meaning & origin
What it means
One Latin interpretation is “the tenth-born child.”
Where it comes from
An origin associated with this spelling is Latin.
The story
Published U.S. birth records include this spelling as early as 2006. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Decimus through the years
- Babies since 1880
- 67
- 67 boys · 0 girls
- Most popular year
- 2006
- 8 babies
- 2025
- 8
- #9,109 for boys
- 2021–25 vs 2016–20
- —
- Too few births to compare
By the numbers
In 2025, this name appeared in 8 U.S. birth records for boys, ranking No. 9,109 among boys’ names. The recent annual counts are too incomplete to establish a ten-year comparison. Published U.S. population figures for this spelling include 160 as a surname in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Decimus’s family of names
Decimus has a related form in Decio. Decimus has a related form in Decimo. Decimus has a related form in Decimos.
The ring: nicknames and forms.
Nicknames & forms 4
Diminutives, pet forms, short forms and variants used alongside the name.
See also 1
Names our sources mention alongside this one. They are related in story or meaning, not forms of this name.
People named Decimus
Listed by how widely each person is written about, which says nothing about the name itself.
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