Recorded 2009–2023 Boys' name Peak 2017 56 births

Cilas — boys' name

56 babies named Cilas in U.S. Social Security records since 2009, with the highest year being 2017. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

2000s52010s342020s17
2010s
Peak decade

61% of everyone ever named Cilas was born in this single decade.

2017
Single peak year

10 babies were named Cilas in 2017 — its busiest year on record.

What the Data Says About Cilas

The Social Security Administration has registered 56 babies named Cilas between 2009 and 2023, spanning 15 consecutive years of U.S. birth records. As a boy's name, Cilas currently falls outside the top 1,000 boys' names for 2023. The name reached its historical peak in 2017, when 10 babies received it in a single year.

Decade-level aggregation shows that Cilas performed strongest in the 2010s, accumulating 34 births during that ten-year window. Across the 3 decades of recorded activity, Cilas shows notable generational variation in parental adoption.

No etymological entry is currently available for Cilas 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 56 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.

Cilas at a glance

Last recorded 2023

Total births

56

Since 2009

15 years of records

Peak year

2017

10 births that year

Strongest decade: 2010s

Current rank

Unranked

Outside the modern top-1,000

As of 2023

Active since

2009

Recorded for 15 years

Last year on file: 2023

Cilas popularity over time

Annual U.S. births registered with the Social Security Administration · 2023–2009

Last recorded 2023
Peak year (2017)
10
Annual births at peak — across 15 years of records
4681012 202320222020201920172016201220112009 5

Cilas by decade

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

Peak: 2010s
Peak decade
2010s
34 births that decade — 61% of Cilas's all-time total
2000s52010s342020s17

Frequently Asked Questions

How popular is the name Cilas?
56 babies have been named Cilas since 2009. It was last recorded in 2023. The peak year was 2017 with 10 births.
When was Cilas most popular?
Cilas was most popular in the 2010s decade with 34 total births. The single peak year was 2017.
How long has the name Cilas been used?
Cilas has been recorded in Social Security data since 2009, spanning 15 years of data through 2023.
What names are similar to Cilas?
Names with a similar sound or spelling include Cillian, Cilton, Cilian. 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, 2009–2023 (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.