Recorded 1946–1999 Girls' name Peak 1951 85 births

Kathlen — girls' name

85 babies named Kathlen in U.S. Social Security records since 1946, with the highest year being 1951. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1940s221950s401960s131990s10

The verdict

85 girls have been named Kathlen since 1946, peaking in the 1950s, last recorded in 1999.

85
total births
1946–1999
years on record
1950s
peak decade
47%
born in that decade
1950s
Peak decade

47% of everyone ever named Kathlen was born in this single decade.

1951
Single peak year

10 babies were named Kathlen in 1951 — its busiest year on record.

What the Data Says About Kathlen

The Social Security Administration has registered 85 babies named Kathlen between 1946 and 1999, spanning 54 consecutive years of U.S. birth records. As a girl's name, Kathlen currently falls outside the top 1,000 girls' names for 1999. The name reached its historical peak in 1951, when 10 babies received it in a single year.

Decade-level aggregation shows that Kathlen performed strongest in the 1950s, accumulating 40 births during that ten-year window. Across the 4 decades of recorded activity, Kathlen shows a clear decline from its mid-century high.

No etymological entry is currently available for Kathlen 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 85 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.

Kathlen at a glance

Last recorded 1999

Total births

85

Since 1946

54 years of records

Peak year

1951

10 births that year

Strongest decade: 1950s

Current rank

Unranked

Outside the modern top-1,000

As of 1999

Active since

1946

Recorded for 54 years

Last year on file: 1999

Kathlen popularity over time

Annual U.S. births registered with the Social Security Administration · 1999–1946

Last recorded 1999
Peak year (1951)
10
Annual births at peak — across 54 years of records
4681012 19991965195619531951194919471946 5

Kathlen by decade

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

Peak: 1950s
Peak decade
1950s
40 births that decade — 47% of Kathlen's all-time total
1940s221950s401960s131990s10

Frequently Asked Questions

How popular is the name Kathlen?
85 babies have been named Kathlen since 1946. It was last recorded in 1999. The peak year was 1951 with 10 births.
When was Kathlen most popular?
Kathlen was most popular in the 1950s decade with 40 total births. The single peak year was 1951.
How long has the name Kathlen been used?
Kathlen has been recorded in Social Security data since 1946, spanning 54 years of data through 1999.
What names are similar to Kathlen?
Names with a similar sound or spelling include Kathleen, Katherine, Kathryn, Kathy, and 4 more. These share a common prefix and are also used for girls.

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, 1946–1999 (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.