Total births
423
Boys' name · since 1912
Tadeusz
Since 1912, U.S. Social Security records show 423 babies named Tadeusz, peaking in 1917. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #12441
- among boys today
- 423
- born since 1912
- 1910s
- peak decade
- 13%
- more common than other boys
Yes -- Tadeusz is the #12441 most popular boys' name in the U.S. today, with 423 recorded since 1912.
Social Security Administration records show Tadeusz recorded 423 times among boys since 1912, holding rank #12441 nationally today, ahead of 13% of boys, peaking in the 1910s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1912 to 2024.
- #12441 among boys today
- 423 born since 1912
- 1910s peak decade
- 13% more common than other boys
Data updated Jun 2026
The verdict
Tadeusz is currently the #12441 boys' name in America, more common than 13% of boys - 423 born since 1912, peaking in the 1910s.
- #12441
- among boys today
- 423
- born since 1912
- 1910s
- peak decade
- 13%
- more common than other boys
Tadeusz vs. every other boys name in current SSA rankings
#12441
of 14,294 boys in use
More common than 13% of names given to boys today.
1910s
Peak decade
24% of everyone ever named Tadeusz was born in this single decade.
1917
Single peak year
26 babies were named Tadeusz in 1917 - its busiest year on record.
How Tadeusz compares
423 Top 47% higher than 53% 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
Tadeusz's all-time total is 15% above the median boys name, and Liam still leads by a wide margin.
| Metric | Tadeusz | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 423 | 367 | 358,536 |
| Peak-year births | 26 | 23 | 22,252 |
Tadeusz's usage pattern, beyond the headline number
Tadeusz splits its recorded history at 1970: 38% of all births land in the more recent half, 62% in the earlier half, leaning more toward its earlier era than today's. The single quietest year was 1912 (5 births) -- compare that against the 1917 peak of 26 for a sense of just how much the name's popularity has swung.
Tadeusz at a glance
Outside the top 1,000Peak year
1917
Current rank
#12,441
Active since
1912
Tadeusz popularity over time
Annual U.S. births registered with the Social Security Administration · 1912–2024
- Peak year (1917)
- 26
- Annual births at peak, across 113 years of records
Tadeusz by decade
Total births in each ten-year window, peak vs trough at a glance
1910s was Tadeusz's strongest decade.
101 babies received the name during that ten-year window, about 24% of all-time use.
Tadeusz births by decade
Total births in each ten-year window
- 1910s
1910s
101 births
- 1920s
1920s
95 births
- 1930s 6
1930s
6 births
- 1950s 24
1950s
24 births
- 1960s 35
1960s
35 births
- 1970s 22
1970s
22 births
- 1980s 33
1980s
33 births
- 1990s 18
1990s
18 births
- 2000s 12
2000s
12 births
- 2010s 37
2010s
37 births
- 2020s 40
2020s
40 births
What this shows Peak: 1910s at 101 births (24% of all-time use).
Tadeusz by state
Where Tadeusz concentrates geographically, total births since 1912
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Massachusetts | | 11 | 2.6% |
| #2 | Ohio | | 5 | 1.2% |
Massachusetts share of Tadeusz's total US births 2.6%
Even split
11 of 423 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
How popular is the name Tadeusz? ▼
423 babies have been named Tadeusz since 1912. It currently ranks #12441 among boys. The peak year was 1917 with 26 births.
When was Tadeusz most popular? ▼
Tadeusz was most popular in the 1910s decade with 101 total births. The single peak year was 1917.
Where is Tadeusz most popular? ▼
The top states for the name Tadeusz are Massachusetts (11 births), Ohio (5 births).
How long has the name Tadeusz been used? ▼
Tadeusz has been recorded in Social Security data since 1912, spanning 113 years of data through 2024.
What names are similar to Tadeusz? ▼
Names with a similar sound or spelling include Tad, Tadeo, Tadd, Tadashi, and 4 more. These share a common prefix and are also used for boys.
What to do with Tadeusz's data
- Tadeusz's usage has stayed within range of its 1910s decade-level peak (101 total births) through the 2020s (40) -- a comparatively stable name, not a fading trend.
- Massachusetts records the most Tadeuszs (11 births) -- see the full state breakdown if geography matters to your decision. Massachusetts 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 Tadeusz
Nearby Names Like Tadeusz
Names with a similar sound, spelling, or feel to Tadeusz
Tad Boy
#7293 6,929 births
Tadeo Boy
#412 5,843 births
Tadd Boy
1,457 births
Tadashi Boy
#8361 676 births
Tadhg Boy
#3078 613 births
Compare Tadeusz side by side: Tadeusz vs Tad Tadeusz vs Tadeo Tadeusz vs Tadd
Related Names
Names with a similar popularity rank to Tadeusz
Sabas #12440
739 births · Peak 1930
Ulric #12442
513 births · Peak 2021
Denson #12439
438 births · Peak 1926
Valdemar #12443
964 births · Peak 2002
Cliffton #12438
1,872 births · Peak 1982
Christo #12444
628 births · Peak 1971
Waldon #12437
693 births · Peak 1922
Stevens #12445
1,306 births · Peak 1989
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, 1912–2024 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Tadeusz: #12441 Boys' Name - 423 Births, Peak 1917." NameAlmanac. Accessed via https://namealmanac.com/name/tadeusz. 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 Tadeusz 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.