Total births
4,005
Boys' name · since 1880
Theadore
4,005 babies named Theadore in U.S. Social Security records since 1880, with the highest year being 1927. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #9912
- among boys today
- 4,005
- born since 1880
- 1920s
- peak decade
- 31%
- more common than other boys
Theadore currently ranks #9912 among boys' names in America, with 4,005 babies recorded since 1880.
According to the U.S. Social Security Administration, Theadore has been recorded 4,005 times among boys since 1880, currently ranked #9912 nationally and more common than 31% of boys, with its heaviest use in the 1920s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1880 to 2025.
- #9912 among boys today
- 4,005 born since 1880
- 1920s peak decade
- 31% more common than other boys
Data updated Jun 2026
The verdict
Theadore is currently the #9912 boys' name in America, more common than 31% of boys - 4,005 born since 1880, peaking in the 1920s.
- #9912
- among boys today
- 4,005
- born since 1880
- 1920s
- peak decade
- 31%
- more common than other boys
Theadore vs. every other boys name in current SSA rankings
#9912
of 14,294 boys in use
More common than 31% of names given to boys today.
1920s
Peak decade
19% of everyone ever named Theadore was born in this single decade.
1927
Single peak year
91 babies were named Theadore in 1927 - its busiest year on record.
How Theadore compares
4,005 Top 14% higher than 86% of 14,294 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
Theadore's all-time total is 11x the median boys name, and Liam still leads by a wide margin.
| Metric | Theadore | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 4,005 | 367 | 358,536 |
| Peak-year births | 91 | 23 | 22,252 |
Theadore's usage pattern, beyond the headline number
Divide Theadore's SSA record in two at 1949 and the more recent half accounts for 33% of all births, the earlier half the remaining 67%, consistent with a name more common in the past than in recent years. Its calmest year was 1880, with only 5 births recorded -- set against the 1927 peak of 91, that's the full swing in one name's fortunes.
Theadore at a glance
Outside the top 1,000Peak year
1927
Current rank
#9,912
Active since
1880
Theadore popularity over time
Annual U.S. births registered with the Social Security Administration · 1880–2025
- Peak year (1927)
- 91
- Annual births at peak, across 146 years of records
Theadore by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Theadore's strongest decade.
770 babies received the name during that ten-year window, about 19% of all-time use.
Theadore births by decade
Total births in each ten-year window
- 1880s 47
1880s
47 births
- 1890s 38
1890s
38 births
- 1900s 137
1900s
137 births
- 1910s
1910s
428 births
- 1920s
1920s
770 births
- 1930s
1930s
703 births
- 1940s
1940s
592 births
- 1950s
1950s
536 births
- 1960s
1960s
323 births
- 1970s 175
1970s
175 births
- 1980s 110
1980s
110 births
- 1990s 50
1990s
50 births
- 2000s 28
2000s
28 births
- 2010s 32
2010s
32 births
- 2020s 36
2020s
36 births
What this shows Peak: 1920s at 770 births (19% of all-time use).
How Theadore compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Theadore's total volume
Theadore vs 15 similarly-sized boys names
Theadore by state
Where Theadore concentrates geographically, total births since 1880
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Pennsylvania | | 160 | 4.0% |
| #2 | South Carolina | | 110 | 2.7% |
| #3 | California | | 92 | 2.3% |
| #4 | Michigan | | 86 | 2.1% |
| #5 | North Carolina | | 85 | 2.1% |
| #6 | Ohio | | 70 | 1.7% |
| #7 | New York | | 54 | 1.3% |
| #8 | Illinois | | 52 | 1.3% |
Pennsylvania share of Theadore's total US births 4.0%
Even split
160 of 4,005 births nationwide. Compared to a flat distribution across 22 reporting states.
Theadore appears in 22 states. Explore state details →
Frequently Asked Questions
How popular is the name Theadore? ▼
Theadore has been given to 4,005 babies in the U.S. since 1880, according to SSA data. Among boys, it ranks #9912 as of the latest data. 91 babies were born in 1927, its single highest year.
When was Theadore most popular? ▼
Theadore was most popular in the 1920s decade with 770 total births. The single peak year was 1927.
Where is Theadore most popular? ▼
The top states for the name Theadore are Pennsylvania (160 births), South Carolina (110 births), California (92 births).
How long has the name Theadore been used? ▼
Records for Theadore go back to 1880, giving 146 years of history through 2025.
What names are similar to Theadore? ▼
Names with a similar sound or spelling include Theodore, Theo, Theron, Theophilus, and 4 more. These share a common prefix and are also used for boys.
What to do with Theadore's data
- Theadore's decade-level peak was the 1920s (770 total births); usage has since declined to 36 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Pennsylvania records the most Theadores (160 births) -- see the full state breakdown if geography matters to your decision. Pennsylvania 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 Theadore
Nearby Names Like Theadore
Names with a similar sound, spelling, or feel to Theadore
Theodore Boy
#4 317,206 births
Theo Boy
#80 35,830 births
Theron Boy
#2837 12,960 births
Theophilus Boy
#2213 2,448 births
Theodis Boy
2,244 births
Compare Theadore side by side: Theadore vs Theodore Theadore vs Theo Theadore vs Theron
Related Names
Names with a similar popularity rank to Theadore
Data Sources
Data as of June 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, 1880–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Theadore: #9912 Boys' Name - 4,005 Births, Peak 1927." NameAlmanac. Accessed via https://namealmanac.com/name/theadore. 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 Theadore 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 June 2026.