How Many People Are Named Kacper?
An estimated 1,079 people in the United States have the first name Kacper. It is almost exclusively a male name. The average bearer is 17 years old, and Kacper peaked in popularity in 2007 with 88 births that year.
Below you will find a full statistical profile of Kacper 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 Kacper paired with any surname.
Key Insights
- Kacper is a modern name. With an average bearer age of just 17, it has gained most of its popularity in recent years.
Estimated Living Americans
1,079
About 1 in 317,659 people in the U.S.
Rarity
Rare
Predicted Gender
Male
100.0% confidence
Average Age
17
years old
Peak Year
2007
88 births
Total Registered
1,091
since 1880
Gender Distribution for Kacper
Kacper is almost exclusively a male name. Out of 1,091 total births registered, 100.0% were male.
Kacper as a male name
Ranked #5,535 in 2024
17 male births in 2024
Peak: 2007 (88 births)
Kacper: Popularity Over Time
SSA records for Kacper span from the 1990s to the 2020s, covering 4 decades of naming data. The most popular decade for this name was the 2000s, when 563 babies were registered. Kacper has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Kacper by Decade
How has Kacper 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.
Kacper by State
Birth registrations for Kacper span all 4 states and territories in the SSA database. The highest counts are in Illinois, New York, New Jersey. The lowest are in Connecticut, New Jersey, New York. On average, about 209 Kacpers were registered per state.
Kacper + Last Name Combinations
How many people share a full name with Kacper as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kacper
Other first names starting with K with a similar number of bearers.
Kacper: Questions and Answers
How many people in the U.S. are named Kacper?
We estimate approximately 1,079 people named Kacper 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 317,659 Americans share this first name.
Is Kacper a common name?
Kacper is classified as "Rare" and is more popular than 90.6% of all first names in the SSA database. A total of 1,091 births have been registered with this name since 1880.
When was Kacper most popular?
Kacper reached peak popularity in 2007, when 88 babies were given this name. The average age of a living person named Kacper is approximately 17 years old, reflecting when the name was most commonly given.
Is Kacper a male name?
Kacper is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Kacper Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kacper Smith, Kacper Johnson, Kacper 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.
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