Recorded 1915–1921 Boys' name Peak 1915 10 births

Vaclav — boys' name

10 babies named Vaclav in U.S. Social Security records since 1915, with the highest year being 1915. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1910s51920s5
1910s
Peak decade

50% of everyone ever named Vaclav was born in this single decade.

1915
Single peak year

5 babies were named Vaclav in 1915 — its busiest year on record.

What the Data Says About Vaclav

The Social Security Administration has registered 10 babies named Vaclav between 1915 and 1921, spanning 7 consecutive years of U.S. birth records. As a boy's name, Vaclav currently falls outside the top 1,000 boys' names for 1921. The name reached its historical peak in 1915, when 5 babies received it in a single year.

Decade-level aggregation shows that Vaclav performed strongest in the 1910s, accumulating 5 births during that ten-year window. Across the 2 decades of recorded activity, Vaclav shows a stable profile with only moderate drift from its peak decade.

No etymological entry is currently available for Vaclav 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 10 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.

Vaclav at a glance

Last recorded 1921

Total births

10

Since 1915

7 years of records

Peak year

1915

5 births that year

Strongest decade: 1910s

Current rank

Unranked

Outside the modern top-1,000

As of 1921

Active since

1915

Recorded for 7 years

Last year on file: 1921

Vaclav popularity over time

Annual U.S. births registered with the Social Security Administration · 1921–1915

Last recorded 1921
Peak year (1915)
5
Annual births at peak — across 7 years of records
5 19211915 5

Vaclav by decade

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

Peak: 1910s
Peak decade
1910s
5 births that decade — 50% of Vaclav's all-time total
1910s51920s5

Frequently Asked Questions

How popular is the name Vaclav?
10 babies have been named Vaclav since 1915. It was last recorded in 1921. The peak year was 1915 with 5 births.
When was Vaclav most popular?
Vaclav was most popular in the 1910s decade with 5 total births. The single peak year was 1915.
How long has the name Vaclav been used?
Vaclav has been recorded in Social Security data since 1915, spanning 7 years of data through 1921.
What names are similar to Vaclav?
Names with a similar sound or spelling include Vachel, Vache, Vachon, Vachan. 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, 1915–1921 (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.