Recorded 1880–2020 Boys' name Peak 1923 1,324 births

Delos — boys' name

1,324 babies named Delos in U.S. Social Security records since 1880, with the highest year being 1923. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1880s301890s351900s321910s2491920s3651930s2621940s1441950s1151960s501970s141980s111990s62010s62020s5

The verdict

1,324 boys have been named Delos since 1880, peaking in the 1920s, last recorded in 2020.

1,324
total births
1880–2020
years on record
1920s
peak decade
28%
born in that decade
1920s
Peak decade

28% of everyone ever named Delos was born in this single decade.

1923
Single peak year

49 babies were named Delos in 1923 — its busiest year on record.

What the Data Says About Delos

The Social Security Administration has registered 1,324 babies named Delos between 1880 and 2020, spanning 141 consecutive years of U.S. birth records. As a boy's name, Delos currently falls outside the top 1,000 boys' names for 2020. The name reached its historical peak in 1923, when 49 babies received it in a single year.

Decade-level aggregation shows that Delos performed strongest in the 1920s, accumulating 365 births during that ten-year window. Across the 14 decades of recorded activity, Delos shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Michigan, which accounts for 38 births — the largest state-level total in the dataset — followed by New York and Wisconsin. In total, SSA state-level files list Delos in 8 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Delos 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 1,324 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.

Delos at a glance

Last recorded 2020

Total births

1,324

Since 1880

141 years of records

Peak year

1923

49 births that year

Strongest decade: 1920s

Current rank

Unranked

Outside the modern top-1,000

As of 2020

Active since

1880

Recorded for 141 years

Last year on file: 2020

Delos popularity over time

Annual U.S. births registered with the Social Security Administration · 2020–1880

Last recorded 2020
Peak year (1923)
49
Annual births at peak — across 141 years of records
0102030405060 202019631952194219321922191218911880 7

Delos by decade

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

Peak: 1920s
Peak decade
1920s
365 births that decade — 28% of Delos's all-time total
1880s301890s351900s321910s2491920s3651930s2621940s1441950s1151960s501970s141980s111990s62010s62020s5

Delos by state

Where Delos concentrates geographically — total births since 1880

Geographically diffuse
Top 8 states by recorded births for the name Delos
Rank State Visual share Births Share of total
#1 Michigan
38 2.9%
#2 New York
31 2.3%
#3 Wisconsin
23 1.7%
#4 Iowa
22 1.7%
#5 Louisiana
12 0.9%
#6 Illinois
6 0.5%
#7 Indiana
5 0.4%
#8 Minnesota
5 0.4%
Michigan share of Delos's total US births 2.9%
Even split

38 of 1,324 births nationwide. Compared to a flat distribution across 8 reporting states.

Frequently Asked Questions

How popular is the name Delos?
1,324 babies have been named Delos since 1880. It was last recorded in 2020. The peak year was 1923 with 49 births.
When was Delos most popular?
Delos was most popular in the 1920s decade with 365 total births. The single peak year was 1923.
Where is Delos most popular?
The top states for the name Delos are Michigan (38 births), New York (31 births), Wisconsin (23 births).
How long has the name Delos been used?
Delos has been recorded in Social Security data since 1880, spanning 141 years of data through 2020.
What names are similar to Delos?
Names with a similar sound or spelling include Delbert, Delmar, Delmer, Delano, and 4 more. These share a common prefix and are also used for boys.

Keep exploring Delos

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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, 1880–2020 (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.