Total births
511
Boys' name · since 1922
Thadius
511 babies named Thadius in U.S. Social Security records since 1922, with the highest year being 1974. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #10028
- among boys today
- 511
- born since 1922
- 1970s
- peak decade
- 30%
- more common than other boys
Thadius currently ranks #10028 among boys' names in America, with 511 babies recorded since 1922.
Social Security Administration records show Thadius recorded 511 times among boys since 1922, holding rank #10028 nationally today, ahead of 30% of boys, peaking in the 1970s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1922 to 2024.
- #10028 among boys today
- 511 born since 1922
- 1970s peak decade
- 30% more common than other boys
Data updated Jun 2026
The verdict
Thadius is currently the #10028 boys' name in America, more common than 30% of boys - 511 born since 1922, peaking in the 1970s.
- #10028
- among boys today
- 511
- born since 1922
- 1970s
- peak decade
- 30%
- more common than other boys
Thadius vs. every other boys name in current SSA rankings
#10028
of 14,294 boys in use
More common than 30% of names given to boys today.
1970s
Peak decade
23% of everyone ever named Thadius was born in this single decade.
1974
Single peak year
19 babies were named Thadius in 1974 - its busiest year on record.
How Thadius compares
511 Top 43% higher than 57% 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
Thadius's all-time total is 39% above the median boys name, and Liam still leads by a wide margin.
| Metric | Thadius | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 511 | 367 | 358,536 |
| Peak-year births | 19 | 23 | 22,252 |
Thadius's usage pattern, beyond the headline number
Splitting Thadius's full recorded timeline at 1993, 46% of its total births fall in the more recent half of the record versus 54% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1922, with just 5 recorded births -- worth weighing against the 1974 peak of 19 to see the full range of the name's swing in popularity.
Thadius at a glance
Outside the top 1,000Peak year
1974
Current rank
#10,028
Active since
1922
Thadius popularity over time
Annual U.S. births registered with the Social Security Administration · 1922–2024
- Peak year (1974)
- 19
- Annual births at peak, across 103 years of records
Thadius by decade
Total births in each ten-year window, peak vs trough at a glance
1970s was Thadius's strongest decade.
118 babies received the name during that ten-year window, about 23% of all-time use.
Thadius births by decade
Total births in each ten-year window
- 1920s 15
1920s
15 births
- 1950s 6
1950s
6 births
- 1960s 13
1960s
13 births
- 1970s
1970s
118 births
- 1980s
1980s
89 births
- 1990s
1990s
116 births
- 2000s
2000s
81 births
- 2010s
2010s
61 births
- 2020s 12
2020s
12 births
What this shows Peak: 1970s at 118 births (23% of all-time use).
How Thadius 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 Thadius's total volume
Thadius vs 15 similarly-sized boys names
Frequently Asked Questions
How popular is the name Thadius? ▼
Thadius has been given to 511 babies in the U.S. since 1922, according to SSA data. Among boys, it ranks #10028 as of the latest data. 19 babies were born in 1974, its single highest year.
When was Thadius most popular? ▼
Thadius was most popular in the 1970s decade with 118 total births. The single peak year was 1974.
How long has the name Thadius been used? ▼
Thadius has been recorded in Social Security data since 1922, spanning 103 years of data through 2024.
What names are similar to Thadius? ▼
Names with a similar sound or spelling include Thaddeus, Thad, Thatcher, Thane, and 4 more. These share a common prefix and are also used for boys.
What to do with Thadius's data
- Thadius's decade-level peak was the 1970s (118 total births); usage has since declined to 12 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- 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 Thadius
Nearby Names Like Thadius
Names with a similar sound, spelling, or feel to Thadius
Thaddeus Boy
#852 26,057 births
Thad Boy
#12364 8,219 births
Thatcher Boy
#1040 4,955 births
Thane Boy
#2967 2,604 births
Thayne Boy
#6507 1,450 births
Compare Thadius side by side: Thadius vs Thaddeus Thadius vs Thad Thadius vs Thatcher
Related Names
Names with a similar popularity rank to Thadius
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, 1922–2024 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Thadius: #10028 Boys' Name - 511 Births, Peak 1974." NameAlmanac. Accessed via https://namealmanac.com/name/thadius. 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 Thadius 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.