Boys' name · since 1921

Masakazu

Since 1921, U.S. Social Security records show 12 babies named Masakazu, peaking in 1925. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.

12
total births
1921–1925
years on record
1920s
peak decade
100%
born in that decade

Masakazu is not among the current top-ranked boys names; 12 have been recorded since 1921.

Social Security Administration records show Masakazu recorded 12 times among boys since 1921, though it doesn't currently rank among the most-used boys names, peaking in the 1920s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1921 to 1925.

  • 12 total births
  • 1921–1925 years on record
  • 1920s peak decade
  • 100% born in that decade

Data updated Jul 2026

Below the archive median
All-time archive position

Masakazu's 12 recorded births place it above 27% of the 45,481 boys names in the full SSA archive.

National only
State-record footprint

No state rows cleared SSA’s public reporting threshold for this name.

Masakazu's usage pattern, beyond the headline number

Splitting Masakazu's full recorded timeline at 1925, 58% of its total births fall in the more recent half of the record versus 42% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1921, with just 5 recorded births -- worth weighing against the 1925 peak of 7 to see the full range of the name's swing in popularity.

Masakazu popularity over time

Annual U.S. births registered with the Social Security Administration · 1921–1925

Last recorded 1925
Peak year (1925)
7
Annual births at peak, across 5 years of records
4.555.566.577.5 19211925 7

Masakazu by decade

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

1920s was Masakazu's strongest decade.

12 babies received the name during that ten-year window, about 100% of all-time use.

Masakazu births by decade

Total births in each ten-year window

births

What this shows Peak: 1920s at 12 births (100% of all-time use).

Source U.S. Social Security Administration · Baby Names As of July 2026

Frequently Asked Questions

How popular is the name Masakazu?
12 babies have been named Masakazu since 1921. It was last recorded in 1925. The peak year was 1925 with 7 births.
When was Masakazu most popular?
Masakazu was most popular in the 1920s decade with 12 total births. The single peak year was 1925.
How long has the name Masakazu been used?
Masakazu has been recorded in Social Security data since 1921, spanning 5 years of data through 1925.
What names are similar to Masakazu?
Names with a similar sound or spelling include Mason, Massimo, Masen, Masyn, and 4 more. These share a common prefix and are also used for boys.

Data Sources

Data as of July 2026. Source: U.S. Social Security Administration (SSA).

According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.

Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1921–1925 (ssa.gov/oact/babynames).

State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).

Cite this page

NameAlmanac. "Masakazu: Baby Name Since 1921 - 12 Births, Peak 1925." NameAlmanac. Accessed via https://namealmanac.com/name/masakazu. Licensed CC BY-SA 4.0.

Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Masakazu draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of July 2026.