Recorded 1912–1971 Boys' name Peak 1937 786 births

Merwyn — boys' name

786 babies named Merwyn in U.S. Social Security records since 1912, with the highest year being 1937. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1910s931920s1831930s2881940s1441950s541960s181970s6
1930s
Peak decade

37% of everyone ever named Merwyn was born in this single decade.

1937
Single peak year

38 babies were named Merwyn in 1937 — its busiest year on record.

What the Data Says About Merwyn

The Social Security Administration has registered 786 babies named Merwyn between 1912 and 1971, spanning 60 consecutive years of U.S. birth records. As a boy's name, Merwyn currently falls outside the top 1,000 boys' names for 1971. The name reached its historical peak in 1937, when 38 babies received it in a single year.

Decade-level aggregation shows that Merwyn performed strongest in the 1930s, accumulating 288 births during that ten-year window. Across the 7 decades of recorded activity, Merwyn shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Illinois, which accounts for 20 births — the largest state-level total in the dataset — followed by Iowa and Pennsylvania. In total, SSA state-level files list Merwyn in 5 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Merwyn 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 786 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.

Merwyn at a glance

Last recorded 1971

Total births

786

Since 1912

60 years of records

Peak year

1937

38 births that year

Strongest decade: 1930s

Current rank

Unranked

Outside the modern top-1,000

As of 1971

Active since

1912

Recorded for 60 years

Last year on file: 1971

Merwyn popularity over time — boys

Annual U.S. births registered with the Social Security Administration · 1971–1912

Last recorded 1971
Peak year (1937)
38
Annual births at peak — across 60 years of records
010203040 19711955194719401933192619191912 8

Merwyn popularity over time — girls

10 total births recorded since 1917 (Merwyn as girls' name)

Unisex variant — 10 births
5 19251917 5

Merwyn by decade

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

Peak: 1930s
Peak decade
1930s
288 births that decade — 37% of Merwyn's all-time total
1910s931920s1831930s2881940s1441950s541960s181970s6

Merwyn by state

Where Merwyn concentrates geographically — total births since 1912

Geographically diffuse
Top 5 states by recorded births for the name Merwyn
Rank State Visual share Births Share of total
#1 Illinois
20 2.5%
#2 Iowa
11 1.4%
#3 Pennsylvania
5 0.6%
#4 Washington
5 0.6%
#5 Wisconsin
5 0.6%
Illinois share of Merwyn's total US births 2.5%
Even split

20 of 786 births nationwide. Compared to a flat distribution across 5 reporting states.

Frequently Asked Questions

How popular is the name Merwyn?
786 babies have been named Merwyn since 1912. It was last recorded in 1971. The peak year was 1937 with 38 births.
When was Merwyn most popular?
Merwyn was most popular in the 1930s decade with 288 total births. The single peak year was 1937.
Where is Merwyn most popular?
The top states for the name Merwyn are Illinois (20 births), Iowa (11 births), Pennsylvania (5 births).
How long has the name Merwyn been used?
Merwyn has been recorded in Social Security data since 1912, spanning 60 years of data through 1971.
What names are similar to Merwyn?
Names with a similar sound or spelling include Merle, Merlin, Merrill, Mervin, 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, 1912–1971 (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.