Boys' name · since 2006
Decimus
67 babies named Decimus in U.S. Social Security records since 2006, with the highest year being 2006. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #20,097 of 45,481
- all-time among boys
- #9,400 of 13,930
- 2025 SSA year
- 67
- born since 2006
- 2010s
- peak decade
67 babies have been named Decimus since 2006, making it today's #9400 boys' name.
Decimus has 67 recorded births among boys since 2006, per the U.S. Social Security Administration, ranked #9400 as of the latest data, more common than 33% of boys, busiest in the 2010s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 2006 to 2025.
- #20,097 of 45,481 all-time among boys
- #9,400 of 13,930 2025 SSA year
- 67 born since 2006
- 2010s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Decimus ranks #20,097 of 45,481 boys' names by all-time recorded births (highest first) and #9,400 of 13,930 among boys' names in 2025. 67 born since 2006, peaking in the 2010s.
- #20,097 of 45,481
- all-time among boys
- #9,400 of 13,930
- 2025 SSA year
- 67
- born since 2006
- 2010s
- peak decade
Decimus's 67 recorded births place it above 55.61% of the 45,481 boys names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
How Decimus compares
67 20th percentile among 13,930 names currently given to boys
Based on all-time total births among currently-ranked boys names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Decimus's all-time total is 82% below the median boys name, and Liam still leads by a wide margin.
| Metric | Decimus | Median boys name (Takari) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 67 | 369 | 358,536 |
| Peak-year births | 8 | 34 | 22,252 |
Decimus's usage pattern, beyond the headline number
Splitting Decimus's full recorded timeline at 2015, 49% of its total births fall in the more recent half of the record versus 51% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 2014, with just 5 recorded births -- worth weighing against the 2006 peak of 8 to see the full range of the name's swing in popularity.
Decimus popularity over time
Annual U.S. births registered with the Social Security Administration · 2006–2025
- Peak year (2006)
- 8
- Annual births at peak, across 20 years of records
Decimus by decade
2010s is the heaviest window (33 births, 49% of the file).
2010s was Decimus's strongest decade.
33 babies received the name during that ten-year window, about 49% of all-time use.
Decimus births by decade
Total births in each ten-year window
- 2000s
2000s
21 births
- 2010s
2010s
33 births
- 2020s 13
2020s
13 births
What this shows Peak: 2010s at 33 births (49% of all-time use).
Frequently Asked Questions
How popular is the name Decimus? ▼
Where does Decimus sit in the SSA name archive? ▼
When was Decimus most popular? ▼
How long has the name Decimus been used? ▼
What names are similar to Decimus? ▼
What to do with Decimus's data
- Decimus's usage has stayed within range of its 2010s decade-level peak (33 total births) through the 2020s (13) -- a comparatively stable name, not a fading trend.
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Decimus
Nearby Names Like Decimus
Names with a similar sound, spelling, or feel to Decimus
Compare Decimus side by side: Decimus vs Declan Decimus vs Decker Decimus vs Decarlos
Related Names
Names with a similar popularity rank to Decimus
Nationwide names with similar peak year or record span
Two nationwide peer axes for Decimus: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2006)
Similar record span (~19 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 2006–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Decimus draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.