Recorded 1951–1951 Unisex name Peak 1951 5 births

Cappy — boys' name

5 babies named Cappy in U.S. Social Security records since 1951, with the highest year being 1951. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1950s5
1950s
Peak decade

100% of everyone ever named Cappy was born in this single decade.

1951
Single peak year

5 babies were named Cappy in 1951 — its busiest year on record.

What the Data Says About Cappy

The Social Security Administration has registered 5 babies named Cappy between 1951 and 1951, spanning 1 consecutive years of U.S. birth records. As a boy's name, Cappy currently falls outside the top 1,000 boys' names for 1951. The name reached its historical peak in 1951, when 5 babies received it in a single year. Cappy is classified as unisex in SSA records: the opposite-sex variant accounts for 5 additional births since 1954.

Decade-level aggregation shows that Cappy performed strongest in the 1950s, accumulating 5 births during that ten-year window.

No etymological entry is currently available for Cappy 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 5 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.

Cappy at a glance

Last recorded 1951

Total births

5

Since 1951

1 years of records

Peak year

1951

5 births that year

Strongest decade: 1950s

Current rank

Unranked

Outside the modern top-1,000

As of 1951

Active since

1951

Recorded for 1 years

Last year on file: 1951

Cappy popularity over time — boys

Annual U.S. births registered with the Social Security Administration · 1951–1951

Last recorded 1951
Peak year (1951)
5
Annual births at peak — across 1 years of records
5 1951 5

Cappy popularity over time — girls

5 total births recorded since 1954 (Cappy as girls' name)

Unisex variant — 5 births
5 1954 5

Cappy by decade

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

Peak: 1950s
Peak decade
1950s
5 births that decade — 100% of Cappy's all-time total
1950s5

Frequently Asked Questions

How popular is the name Cappy?
5 babies have been named Cappy since 1951. It was last recorded in 1951. The peak year was 1951 with 5 births.
When was Cappy most popular?
Cappy was most popular in the 1950s decade with 5 total births. The single peak year was 1951.
Is Cappy a unisex name?
Yes, Cappy is used for both boys and girls. As a boy's name it has 5 births, and as a girl's name it has 5 births.
How long has the name Cappy been used?
Cappy has been recorded in Social Security data since 1951, spanning 1 years of data through 1951.
What names are similar to Cappy?
Names with a similar sound or spelling include Captain, Capone, Caprice, Capri, and 4 more. These share a common prefix and are also used for boys.

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, 1951–1951 (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.