How Many People Are Named Tadeusz?
An estimated 211 people in the United States have the first name Tadeusz. It is almost exclusively a male name. The average bearer is 35 years old, and Tadeusz peaked in popularity in 1917 with 26 births that year.
Below you will find a full statistical profile of Tadeusz as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Tadeusz paired with any surname.
Estimated Living Americans
211
About 1 in 1,624,428 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
35
years old
Peak Year
1917
26 births
Total Registered
423
since 1880
Gender Distribution for Tadeusz
Tadeusz is almost exclusively a male name. Out of 423 total births registered, 100.0% were male.
Tadeusz as a male name
Ranked #13,944 in 2024
5 male births in 2024
Peak: 1917 (26 births)
Tadeusz: Popularity Over Time
SSA records for Tadeusz span from the 1910s to the 2020s, covering 11 decades of naming data. The most popular decade for this name was the 1910s, when 101 babies were registered. While Tadeusz is less common than at its peak in the 1910s, it remains a well-established name with steady registrations.
Tadeusz by Decade
How has Tadeusz tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Tadeusz by State
Tadeusz + Last Name Combinations
How many people share a full name with Tadeusz as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Tadeusz
Other first names starting with T with a similar number of bearers.
Tadeusz: Questions and Answers
How many people in the U.S. are named Tadeusz?
We estimate approximately 211 people named Tadeusz are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 1,624,428 Americans share this first name.
Is Tadeusz a common name?
Tadeusz is classified as "Very Rare" and is more popular than 74.9% of all first names in the SSA database. A total of 423 births have been registered with this name since 1880.
When was Tadeusz most popular?
Tadeusz reached peak popularity in 1917, when 26 babies were given this name. The average age of a living person named Tadeusz is approximately 35 years old, reflecting when the name was most commonly given.
Is Tadeusz a male name?
Tadeusz is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Tadeusz Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Tadeusz Smith, Tadeusz Johnson, Tadeusz Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
Search for a full name combination
How Many of Me