Total births
37
Unisex name · since 2007
Trillian
37 babies named Trillian in U.S. Social Security records since 2007, with the highest year being 2008. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- 37
- total births
- 2007–2015
- years on record
- 2000s
- peak decade
- 54%
- born in that decade
Trillian sits outside today's top ranks for girls, with 37 recorded since 2007.
According to the U.S. Social Security Administration, Trillian has been recorded 37 times among girls since 2007, though it is not among the currently most-used girls names, with its heaviest use in the 2000s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 2007 to 2015.
- 37 total births
- 2007–2015 years on record
- 2000s peak decade
- 54% born in that decade
Data updated Jul 2026
The verdict
37 girls have been named Trillian since 2007, peaking in the 2000s, last recorded in 2015.
- 37
- total births
- 2007–2015
- years on record
- 2000s
- peak decade
- 54%
- born in that decade
2000s
Peak decade
54% of everyone ever named Trillian was born in this single decade.
2008
Single peak year
7 babies were named Trillian in 2008 - its busiest year on record.
Trillian's usage pattern, beyond the headline number
Divide Trillian's SSA record in two at 2010 and the more recent half accounts for 46% of all births, the earlier half the remaining 54%, a genuinely balanced usage pattern. Its calmest year was 2011, with only 5 births recorded -- set against the 2008 peak of 7, that's the full swing in one name's fortunes.
Trillian at a glance
Last recorded 2015Peak year
2008
Current rank
Unranked
Active since
2007
Trillian popularity over time - girls
Annual U.S. births registered with the Social Security Administration · 2007–2015
- Peak year (2008)
- 7
- Annual births at peak, across 9 years of records
Trillian popularity over time - boys
5 total births recorded since 2015 (Trillian as boys' name)
Trillian by decade
Total births in each ten-year window, peak vs trough at a glance
2000s was Trillian's strongest decade.
20 babies received the name during that ten-year window, about 54% of all-time use.
Trillian births by decade
Total births in each ten-year window
- 2000s
2000s
20 births
- 2010s
2010s
17 births
What this shows Peak: 2000s at 20 births (54% of all-time use).
Frequently Asked Questions
How popular is the name Trillian? ▼
Trillian has been given to 37 babies in the U.S. since 2007, according to SSA data. Its last appearance in the data was 2015. 7 babies were born in 2008, its single highest year.
When was Trillian most popular? ▼
Trillian was most popular in the 2000s decade with 20 total births. The single peak year was 2008.
Is Trillian a unisex name? ▼
Yes, Trillian is used for both boys and girls. As a girl's name it has 37 births, and as a boy's name it has 5 births.
How long has the name Trillian been used? ▼
Records for Trillian go back to 2007, giving 9 years of history through 2015.
What names are similar to Trillian? ▼
Names with a similar sound or spelling include Trinity, Trisha, Tricia, Trina, and 4 more. These share a common prefix and are also used for girls.
What to do with Trillian's data
- Trillian's usage has stayed within range of its 2000s decade-level peak (20 total births) through the 2010s (17) -- 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 Trillian
Nearby Names Like Trillian
Names with a similar sound, spelling, or feel to Trillian
Trinity Girl
#400 85,348 births
Trisha Girl
#2826 40,302 births
Tricia Girl
40,134 births
Trina Girl
#7274 32,568 births
Trista Girl
#12381 12,459 births
Compare Trillian side by side: Trillian vs Trinity Trillian vs Trisha Trillian vs Tricia
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, 2007–2015 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Trillian: Baby Name Since 2007 - 37 Births, Peak 2008." NameAlmanac. Accessed via https://namealmanac.com/name/trillian. 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 Trillian 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.