Boys' name · since 1915

Casto

Since 1915, U.S. Social Security records show 21 babies named Casto, peaking in 1940. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.

#28,539 of 45,481
all-time among boys
21
born since 1915
1940s
peak decade

21 boys have been named Casto since 1915, though it isn't currently a top-ranked name.

Social Security Administration records show Casto recorded 21 times among boys since 1915, though it doesn't currently rank among the most-used boys names, peaking in the 1940s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1915 to 1978.

  • #28,539 of 45,481 all-time among boys
  • 21 born since 1915
  • 1940s peak decade

Data updated Aug 2026

The verdict

According to the U.S. Social Security Administration, Casto ranks #28,539 of 45,481 boys' names by all-time recorded births (highest first). 21 born since 1915, peaking in the 1940s.

#28,539 of 45,481
all-time among boys
21
born since 1915
1940s
peak decade
Below the archive median
All-time archive position

Casto's 21 recorded births place it above 36.43% 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.

Casto's usage pattern, beyond the headline number

Splitting Casto's full recorded timeline at 1940, 52% of its total births fall in the more recent half of the record versus 48% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1915, with just 5 recorded births -- worth weighing against the 1940 peak of 6 to see the full range of the name's swing in popularity.

Casto popularity over time

Annual U.S. births registered with the Social Security Administration · 1915–1978

Last recorded 1978
Peak year (1940)
6
Annual births at peak, across 64 years of records
4.555.566.5 1915193219401978 5

Casto by decade

1940s is the heaviest window (6 births, 29% of the file).

1940s was Casto's strongest decade.

6 babies received the name during that ten-year window, about 29% of all-time use.

Casto births by decade

Total births in each ten-year window

births

What this shows Peak: 1940s at 6 births (29% of all-time use).

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

Frequently Asked Questions

How popular is the name Casto? ▼
Since 1915, Social Security records show 21 babies named Casto. Across the full SSA archive it ranks #28,539 of 45,481 boys' names by total births. The most recent recorded year was 1978. Its busiest year on record was 1940, with 6 births.
Where does Casto sit in the SSA name archive? ▼
According to the U.S. Social Security Administration, Casto ranks #28,539 of 45,481 boys' names by all-time recorded births (highest first). All-time ordinal matches browse popularity (total births DESC); the current ordinal uses the null SSA file. See /methodology#corpus-placement.
When was Casto most popular? ▼
Casto was most popular in the 1940s decade with 6 total births. The single peak year was 1940.
How long has the name Casto been used? ▼
The SSA has tracked Casto since 1915 -- 64 years through the most recent 1978 data.
What names are similar to Casto? ▼
Names with a similar sound or spelling include Casey, Cash, Cason, Case, and 4 more. These share a common prefix and are also used for boys.

What to do with Casto's data

  • Casto's usage has stayed within range of its 1940s decade-level peak (6 total births) through the 1970s (5) -- a comparatively stable name, not a fading trend.

Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.

Keep exploring Casto

Nearby Names Like Casto

Names with a similar sound, spelling, or feel to Casto

Casey Boy
#320 116,675 births
Cash Boy
#287 27,705 births
Cason Boy
#847 11,308 births
Case Boy
#734 9,926 births
Cassius Boy
#582 9,736 births

Compare Casto side by side: Casto vs Casey Casto vs Cash Casto vs Cason

Or pick any two names to compare →

Related Names

Names with a similar number of total births

Lute
21 births · Peak 1927
Dewy
21 births · Peak 1898
Wince
21 births · Peak 1914
Waddie
21 births · Peak 1919
Benhard
21 births · Peak 1922
Ludy
21 births · Peak 1916
Narcisse
21 births · Peak 1918
Vassar
21 births · Peak 1917

Nationwide names with similar peak year or record span

Two nationwide peer axes for Casto: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.

Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.

Data Sources

Data as of August 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, 1915–1978 (ssa.gov/oact/babynames).

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

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 Casto 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 August 2026.