Total births
1,102
Boys' name · since 1994
Kacper
1,102 babies named Kacper in U.S. Social Security records since 1994, with the highest year being 2007. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #5554
- among boys today
- 1,102
- born since 1994
- 2000s
- peak decade
- 61%
- more common than other boys
Yes -- Kacper is the #5554 most popular boys' name in the U.S. today, with 1,102 recorded since 1994.
According to the U.S. Social Security Administration, Kacper has been recorded 1,102 times among boys since 1994, currently ranked #5554 nationally and more common than 61% of boys, with its heaviest use in the 2000s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1994 to 2025.
- #5554 among boys today
- 1,102 born since 1994
- 2000s peak decade
- 61% more common than other boys
Data updated Jun 2026
The verdict
Kacper is currently the #5554 boys' name in America, more common than 61% of boys - 1,102 born since 1994, peaking in the 2000s.
- #5554
- among boys today
- 1,102
- born since 1994
- 2000s
- peak decade
- 61%
- more common than other boys
Kacper vs. every other boys name in current SSA rankings
#5554
of 14,294 boys in use
More common than 61% of names given to boys today.
2000s
Peak decade
51% of everyone ever named Kacper was born in this single decade.
2007
Single peak year
88 babies were named Kacper in 2007 - its busiest year on record.
How Kacper compares
1,102 Top 29% higher than 71% 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
Kacper's all-time total is 3x the median boys name, and Liam still leads by a wide margin.
| Metric | Kacper | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 1,102 | 367 | 358,536 |
| Peak-year births | 88 | 23 | 22,252 |
Kacper's usage pattern, beyond the headline number
Splitting Kacper's full recorded timeline at 2010, 43% of its total births fall in the more recent half of the record versus 57% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1997, with just 7 recorded births -- worth weighing against the 2007 peak of 88 to see the full range of the name's swing in popularity.
Kacper at a glance
Outside the top 1,000Peak year
2007
Current rank
#5,554
Active since
1994
Kacper popularity over time
Annual U.S. births registered with the Social Security Administration · 1994–2025
- Peak year (2007)
- 88
- Annual births at peak, across 32 years of records
Kacper by decade
Total births in each ten-year window, peak vs trough at a glance
2000s was Kacper's strongest decade.
563 babies received the name during that ten-year window, about 51% of all-time use.
Kacper births by decade
Total births in each ten-year window
- 1990s 63
1990s
63 births
- 2000s
2000s
563 births
- 2010s
2010s
400 births
- 2020s 76
2020s
76 births
What this shows Peak: 2000s at 563 births (51% of all-time use).
How Kacper 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 Kacper's total volume
Kacper vs 15 similarly-sized boys names
Kacper by state
Where Kacper concentrates geographically, total births since 1994
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Illinois | | 541 | 49.1% |
| #2 | New York | | 202 | 18.3% |
| #3 | New Jersey | | 76 | 6.9% |
| #4 | Connecticut | | 17 | 1.5% |
Illinois share of Kacper's total US births 49.1%
Even split
541 of 1,102 births nationwide. Compared to a flat distribution across 4 reporting states.
Frequently Asked Questions
How popular is the name Kacper? ▼
1,102 babies have been named Kacper since 1994. It currently ranks #5554 among boys. The peak year was 2007 with 88 births.
When was Kacper most popular? ▼
Kacper was most popular in the 2000s decade with 563 total births. The single peak year was 2007.
Where is Kacper most popular? ▼
The top states for the name Kacper are Illinois (541 births), New York (202 births), New Jersey (76 births).
How long has the name Kacper been used? ▼
The SSA has tracked Kacper since 1994 -- 32 years through the most recent 2025 data.
What names are similar to Kacper? ▼
Names with a similar sound or spelling include Kacey, Kace, Kacen, Kacy, and 4 more. These share a common prefix and are also used for boys.
What to do with Kacper's data
- Kacper's decade-level peak was the 2000s (563 total births); usage has since declined to 76 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Illinois records the most Kacpers (541 births) -- see the full state breakdown if geography matters to your decision. Illinois 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 Kacper
Nearby Names Like Kacper
Names with a similar sound, spelling, or feel to Kacper
Kacey Boy
#1044 3,304 births
Kace Boy
#999 3,188 births
Kacen Boy
#1916 1,675 births
Kacy Boy
#7873 998 births
Kacee Boy
#6295 290 births
Compare Kacper side by side: Kacper vs Kacey Kacper vs Kace Kacper vs Kacen
Related Names
Names with a similar popularity rank to Kacper
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, 1994–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Kacper: #5554 Boys' Name - 1,102 Births, Peak 2007." NameAlmanac. Accessed via https://namealmanac.com/name/kacper. 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 Kacper 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.