Mas — boys' name
11 babies named Mas in U.S. Social Security records since 1921, with the highest year being 1921. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
The verdict
11 boys have been named Mas since 1921, peaking in the 1920s, last recorded in 1929.
- 11
- total births
- 1921–1929
- years on record
- 1920s
- peak decade
- 100%
- born in that decade
100% of everyone ever named Mas was born in this single decade.
6 babies were named Mas in 1921 — its busiest year on record.
What the Data Says About Mas
The Social Security Administration has registered 11 babies named Mas between 1921 and 1929, spanning 9 consecutive years of U.S. birth records. As a boy's name, Mas currently falls outside the top 1,000 boys' names for 1929. The name reached its historical peak in 1921, when 6 babies received it in a single year.
Decade-level aggregation shows that Mas performed strongest in the 1920s, accumulating 11 births during that ten-year window. Geographically, the name is most concentrated in California, which accounts for 5 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list Mas in 1 of the 51 U.S. reporting jurisdictions.
No etymological entry is currently available for Mas 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 11 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.
Mas at a glance
Last recorded 1929Peak year
Current rank
Active since
Mas popularity over time
Annual U.S. births registered with the Social Security Administration · 1929–1921
- Peak year (1921)
- 6
- Annual births at peak — across 9 years of records
No longer in the modern top-1000 — last recorded 1929.
11 total births across 9 years of SSA records. Peaked in 1921 with 6 births in a single year.
Mas by decade
Total births in each ten-year window — peak vs trough at a glance
- Peak decade
- 1920s
- 11 births that decade — 100% of Mas's all-time total
Mas decade highlights
- Peak decade 11 births
- Decades tracked with recorded births
1920s was Mas's strongest decade
11 babies received the name during that ten-year window — about 100% of all-time use.
Mas by state
Where Mas concentrates geographically — total births since 1921
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 5 | 45.5% |
5 of 11 births nationwide.
Top 5 states
- California 45.5% of nationwide
Recorded in 1 of 51 SSA jurisdictions
California accounts for 45.5% of all recorded births nationwide — a strong regional concentration for this name.
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Keep exploring Mas
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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, 1921–1929 (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.