Total births
67
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.
- 67
- total births
- 2006–2025
- years on record
- 2010s
- peak decade
- 49%
- born in that decade
Decimus sits outside today's top ranks for boys, with 67 recorded since 2006.
Decimus has 67 recorded births among boys since 2006, per the U.S. Social Security Administration, though it falls outside today's most-used boys names, 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.
- 67 total births
- 2006–2025 years on record
- 2010s peak decade
- 49% born in that decade
Data updated Jul 2026
The verdict
67 boys have been named Decimus since 2006, peaking in the 2010s, last recorded in 2025.
- 67
- total births
- 2006–2025
- years on record
- 2010s
- peak decade
- 49%
- born in that decade
2010s
Peak decade
49% of everyone ever named Decimus was born in this single decade.
2006
Single peak year
8 babies were named Decimus in 2006 - its busiest year on record.
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 at a glance
Last recorded 2025Peak year
2006
Current rank
Unranked
Active since
2006
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
Total births in each ten-year window, peak vs trough at a glance
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? ▼
Decimus has been given to 67 babies in the U.S. since 2006, according to SSA data. Its last appearance in the data was 2025. 8 babies were born in 2006, its single highest year.
When was Decimus most popular? ▼
Decimus was most popular in the 2010s decade with 33 total births. The single peak year was 2006.
How long has the name Decimus been used? ▼
The SSA has tracked Decimus since 2006 -- 20 years through the most recent 2025 data.
What names are similar to Decimus? ▼
Names with a similar sound or spelling include Declan, Decker, Decarlos, Decarlo, and 4 more. These share a common prefix and are also used for boys.
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.
- Weighing it against an alternative? Put two names side by side. Compare names
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
Declan Boy
#132 58,547 births
Decker Boy
#1188 2,842 births
Decarlos Boy
#12619 1,215 births
Decarlo Boy
635 births
Decklan Boy
#5383 600 births
Compare Decimus side by side: Decimus vs Declan Decimus vs Decker Decimus vs Decarlos
Related Names
Names with a similar number of total births
Data Sources
Data as of July 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).
Cite this page
NameAlmanac Editorial. "Decimus: Baby Name Since 2006 - 67 Births, Peak 2006." NameAlmanac. Accessed via https://namealmanac.com/name/decimus. Licensed CC BY-SA 4.0.
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 July 2026.