Recorded 1915–2010 Boys' name Peak 1973 98 births

Delio — boys' name

98 babies named Delio in U.S. Social Security records since 1915, with the highest year being 1973. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1910s61920s61930s51950s51960s71970s201980s131990s132000s182010s5
1970s
Peak decade

20% of everyone ever named Delio was born in this single decade.

1973
Single peak year

9 babies were named Delio in 1973 — its busiest year on record.

What the Data Says About Delio

The Social Security Administration has registered 98 babies named Delio between 1915 and 2010, spanning 96 consecutive years of U.S. birth records. As a boy's name, Delio currently falls outside the top 1,000 boys' names for 2010. The name reached its historical peak in 1973, when 9 babies received it in a single year.

Decade-level aggregation shows that Delio performed strongest in the 1970s, accumulating 20 births during that ten-year window. Across the 10 decades of recorded activity, Delio shows a clear decline from its mid-century high.

No etymological entry is currently available for Delio 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 98 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.

Delio at a glance

Last recorded 2010

Total births

98

Since 1915

96 years of records

Peak year

1973

9 births that year

Strongest decade: 1970s

Current rank

Unranked

Outside the modern top-1,000

As of 2010

Active since

1915

Recorded for 96 years

Last year on file: 2010

Delio popularity over time

Annual U.S. births registered with the Social Security Administration · 2010–1915

Last recorded 2010
Peak year (1973)
9
Annual births at peak — across 96 years of records
45678910 201020061992198819741970195819241915 6

Delio by decade

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

Peak: 1970s
Peak decade
1970s
20 births that decade — 20% of Delio's all-time total
1910s61920s61930s51950s51960s71970s201980s131990s132000s182010s5

Frequently Asked Questions

How popular is the name Delio?
98 babies have been named Delio since 1915. It was last recorded in 2010. The peak year was 1973 with 9 births.
When was Delio most popular?
Delio was most popular in the 1970s decade with 20 total births. The single peak year was 1973.
How long has the name Delio been used?
Delio has been recorded in Social Security data since 1915, spanning 96 years of data through 2010.
What names are similar to Delio?
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.

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, 1915–2010 (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.