US rank #2550 Unisex name Peak 1957 14,497 births

Kirby — #2550 US boys' name

14,497 babies named Kirby in U.S. Social Security records since 1881, with the highest year being 1957. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1880s561890s931900s881910s4031920s6201930s7311940s15091950s30091960s23521970s15891980s13381990s14082000s5962010s4712020s234
#2550
of 14,243 boys in use

More common than 82% of names given to boys today.

1950s
Peak decade

21% of everyone ever named Kirby was born in this single decade.

1957
Single peak year

358 babies were named Kirby in 1957 — its busiest year on record.

What the Data Says About Kirby

The Social Security Administration has registered 14,497 babies named Kirby between 1881 and 2024, spanning 144 consecutive years of U.S. birth records. As a boy's name, Kirby currently holds the #2550 rank among boys for 2024. The name reached its historical peak in 1957, when 358 babies received it in a single year. Kirby is classified as unisex in SSA records: the opposite-sex variant accounts for 3,898 additional births since 1917.

Decade-level aggregation shows that Kirby performed strongest in the 1950s, accumulating 3,009 births during that ten-year window. Across the 15 decades of recorded activity, Kirby shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Texas, which accounts for 1,383 births — the largest state-level total in the dataset — followed by Louisiana and California. In total, SSA state-level files list Kirby in 43 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Kirby in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 14,497 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.

Kirby at a glance

Outside the top 1,000

Total births

14,497

Since 1881

144 years of records

Peak year

1957

358 births that year

Strongest decade: 1950s

Current rank

#2,550

Among boys

As of 2024

Active since

1881

Recorded for 144 years

Last year on file: 2024

Kirby popularity over time — boys

Annual U.S. births registered with the Social Security Administration · 2024–1881

Outside the top 1,000
Peak year (1957)
358
Annual births at peak — across 144 years of records
-1000100200300400 202420061988197019521934191618981881 5

Kirby popularity over time — girls

3,898 total births recorded since 1917 (Kirby as girls' name)

Unisex variant — 3,898 births
-1000100200300400 202420122000198819751963195119331917 8

Kirby by decade

Total births in each ten-year window — peak vs trough at a glance

Peak: 1950s
Peak decade
1950s
3,009 births that decade — 21% of Kirby's all-time total
1880s561890s931900s881910s4031920s6201930s7311940s15091950s30091960s23521970s15891980s13381990s14082000s5962010s4712020s234

Kirby by state

Where Kirby concentrates geographically — total births since 1881

Geographically diffuse
Top 8 states by recorded births for the name Kirby
Rank State Visual share Births Share of total
#1 Texas
1,383 9.5%
#2 Louisiana
746 5.1%
#3 California
686 4.7%
#4 North Carolina
590 4.1%
#5 Illinois
456 3.1%
#6 Pennsylvania
413 2.8%
#7 Ohio
384 2.6%
#8 Missouri
328 2.3%
Texas share of Kirby's total US births 9.5%
Even split

1,383 of 14,497 births nationwide. Compared to a flat distribution across 43 reporting states.

Kirby appears in 43 states. Explore state details →

Frequently Asked Questions

How popular is the name Kirby?
14,497 babies have been named Kirby since 1881. It currently ranks #2550 among boys. The peak year was 1957 with 358 births.
When was Kirby most popular?
Kirby was most popular in the 1950s decade with 3,009 total births. The single peak year was 1957.
Where is Kirby most popular?
The top states for the name Kirby are Texas (1,383 births), Louisiana (746 births), California (686 births).
Is Kirby a unisex name?
Yes, Kirby is used for both boys and girls. As a boy's name it has 14,497 births, and as a girl's name it has 3,898 births.
How long has the name Kirby been used?
Kirby has been recorded in Social Security data since 1881, spanning 144 years of data through 2024.
What names are similar to Kirby?
Names with a similar sound or spelling include Kirk, Kirt, Kiran, Kirkland, and 4 more. These share a common prefix and are also used for boys.

Keep exploring Kirby

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Data Sources

Data as of 2024. Source: U.S. Social Security Administration (SSA).

Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, 1881–2024 (ssa.gov/oact/babynames). National-level data includes all names with 5 or more occurrences in a given year.

State-level: Source: U.S. Social Security Administration, Baby Names — State-Level Files (namesbystate.zip). Includes all names with 5 or more occurrences per state per year; rarer names are excluded for privacy.