Total births
402
Girls' name · since 1907
Theta
Theta has 402 recorded births since 1907 in federal Social Security data, most heavily in 1907 -- full year-by-year trend, decade aggregates, and state rankings follow.
- 402
- total births
- 1907–2015
- years on record
- 1920s
- peak decade
- 25%
- born in that decade
Theta is not among the current top-ranked girls names; 402 have been recorded since 1907.
Theta has 402 recorded births among girls since 1907, per the U.S. Social Security Administration, though it falls outside today's most-used girls names, busiest in the 1920s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1907 to 2015.
- 402 total births
- 1907–2015 years on record
- 1920s peak decade
- 25% born in that decade
Data updated Jul 2026
The verdict
402 girls have been named Theta since 1907, peaking in the 1920s, last recorded in 2015.
- 402
- total births
- 1907–2015
- years on record
- 1920s
- peak decade
- 25%
- born in that decade
1920s
Peak decade
25% of everyone ever named Theta was born in this single decade.
1907
Single peak year
20 babies were named Theta in 1907 - its busiest year on record.
Theta's usage pattern, beyond the headline number
Divide Theta's SSA record in two at 1934 and the more recent half accounts for 42% of all births, the earlier half the remaining 58%, a genuinely balanced usage pattern. Its calmest year was 1918, with only 5 births recorded -- set against the 1907 peak of 20, that's the full swing in one name's fortunes.
Theta at a glance
Last recorded 2015Peak year
1907
Current rank
Unranked
Active since
1907
Theta popularity over time
Annual U.S. births registered with the Social Security Administration · 1907–2015
- Peak year (1907)
- 20
- Annual births at peak, across 109 years of records
Theta by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Theta's strongest decade.
101 babies received the name during that ten-year window, about 25% of all-time use.
Theta births by decade
Total births in each ten-year window
- 1900s 33
1900s
33 births
- 1910s
1910s
56 births
- 1920s
1920s
101 births
- 1930s
1930s
84 births
- 1940s
1940s
62 births
- 1950s 40
1950s
40 births
- 1960s 21
1960s
21 births
- 2010s 5
2010s
5 births
What this shows Peak: 1920s at 101 births (25% of all-time use).
Theta by state
Where Theta concentrates geographically, total births since 1907
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Texas | | 5 | 1.2% |
Texas share of Theta's total US births 1.2%
5 of 402 births nationwide.
Frequently Asked Questions
How popular is the name Theta? ▼
Since 1907, Social Security records show 402 babies named Theta. The most recent recorded year was 2015. Its busiest year on record was 1907, with 20 births.
When was Theta most popular? ▼
Theta was most popular in the 1920s decade with 101 total births. The single peak year was 1907.
Where is Theta most popular? ▼
The top states for the name Theta are Texas (5 births).
How long has the name Theta been used? ▼
Records for Theta go back to 1907, giving 109 years of history through 2015.
What names are similar to Theta? ▼
Names with a similar sound or spelling include Theresa, Thelma, Therese, Thea, and 4 more. These share a common prefix and are also used for girls.
What to do with Theta's data
- Theta's decade-level peak was the 1920s (101 total births); usage has since declined to 5 in the 2010s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Texas records the most Thetas (5 births) -- see the full state breakdown if geography matters to your decision. Texas names
- 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 Theta
Nearby Names Like Theta
Names with a similar sound, spelling, or feel to Theta
Theresa Girl
#1492 404,613 births
Thelma Girl
#4299 225,460 births
Therese Girl
#2180 35,590 births
Thea Girl
#349 20,113 births
Theodora Girl
#811 12,654 births
Compare Theta side by side: Theta vs Theresa Theta vs Thelma Theta vs Therese
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, 1907–2015 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Theta: Baby Name Since 1907 - 402 Births, Peak 1907." NameAlmanac. Accessed via https://namealmanac.com/name/theta. 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 Theta 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.