Recorded 2014–2021 Boys' name Peak 2019 16 births

Castyn — boys' name

16 babies named Castyn in U.S. Social Security records since 2014, with the highest year being 2019. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

2010s112020s5
2010s
Peak decade

69% of everyone ever named Castyn was born in this single decade.

2019
Single peak year

6 babies were named Castyn in 2019 — its busiest year on record.

What the Data Says About Castyn

The Social Security Administration has registered 16 babies named Castyn between 2014 and 2021, spanning 8 consecutive years of U.S. birth records. As a boy's name, Castyn currently falls outside the top 1,000 boys' names for 2021. The name reached its historical peak in 2019, when 6 babies received it in a single year.

Decade-level aggregation shows that Castyn performed strongest in the 2010s, accumulating 11 births during that ten-year window. Across the 2 decades of recorded activity, Castyn shows notable generational variation in parental adoption.

No etymological entry is currently available for Castyn 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 16 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.

Castyn at a glance

Last recorded 2021

Total births

16

Since 2014

8 years of records

Peak year

2019

6 births that year

Strongest decade: 2010s

Current rank

Unranked

Outside the modern top-1,000

As of 2021

Active since

2014

Recorded for 8 years

Last year on file: 2021

Castyn popularity over time

Annual U.S. births registered with the Social Security Administration · 2021–2014

Last recorded 2021
Peak year (2019)
6
Annual births at peak — across 8 years of records
4.555.566.5 202120192014 5

Castyn by decade

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

Peak: 2010s
Peak decade
2010s
11 births that decade — 69% of Castyn's all-time total
2010s112020s5

Frequently Asked Questions

How popular is the name Castyn?
16 babies have been named Castyn since 2014. It was last recorded in 2021. The peak year was 2019 with 6 births.
When was Castyn most popular?
Castyn was most popular in the 2010s decade with 11 total births. The single peak year was 2019.
How long has the name Castyn been used?
Castyn has been recorded in Social Security data since 2014, spanning 8 years of data through 2021.
What names are similar to Castyn?
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.

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, 2014–2021 (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.