Delio

Boys' name

Diminutive of Rodelio

Delio has been given to 98 babies in the U.S. since 1915. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1973, with 9 recorded.

Babies named Delio, 2010

1 in 739,000

Delio over time, 1880–2025

Boys

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Delio: meaning, origin, and history

Diminutive of Rodelio

Deeper origin not confirmed in the cited records

What Delio means

Delio is a diminutive of Rodelio.

Origin, language, and formation

Delio is used in Cebuano.

Related names and everyday forms

Related names include Rodelio.

American usage and historical context

In the United States, 98 boys were recorded with the name Delio between 1915 and 2010. Its highest annual count was 9 in 1973; its best national rank was #3,389 in 1963.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Delio?

Delio had fewer than 5 recorded uses in 2025, so these figures use 2010, the last year it was published.

Among all babies, 2010: 1 in 739,000; 5 of 3,695,928 births
Among boys only: 1 in 384,000; <0.01% of boys
Rank, 2010: Unranked; Fewer than 5 uses
Coin-flip room size: 512,366 kids; Even odds of a second one

Where Delio sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 2010 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%

Class of 30Under 1%

Grade of 100Under 1%

School of 500Under 1%

Put another way: gather 512,366 children born in 2010 and it's an even bet that one of them is another Delio. In a class of 30 the chance is Under 1%.

When Delios were born

Half of everyone ever recorded as Delio was born before 1974 — so the typical Delio is around 51 today.

Median birth year: 1974; About 51 years old
Biggest decade: 1970s; 20.4% of all use
Born in the last 25 years: 43.9%; Spread across generations
Recorded since 1950: 81; People you could plausibly meet

Choose a decade

1970s — 20.4% of all recorded uses (20).

Is Delio rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago: —; Not ranked then
Rank vs 5 years ago: New entry; Not ranked then
Rank vs 10 years ago: —; Not ranked then
Births vs 10 years ago: —; Not published both years
Share of its own peak: 0%; Peak was 1973 (9)
Years since peak: 52; Years
Year-to-year steadiness: Volatile; 25.0% average annual change
Best rank ever: #3,389; 1963

Spellings of Delio

Delio is not the most common spelling — Devin is, with 26.3% against Delio's 0.02%.

Devin26.3%156,250
Eli25.9%153,495
Felix14.1%83,508
Julio10.7%63,775
Denis3.5%20,733
Dario2.0%11,945
Elmo1.7%10,091
Eliot1.3%7,892

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Delio around the world

Where Delio ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

France
1959–2025
#3,605
in 2025

Popularity data from Institut national de la statistique et des études économiques. INSEE data under Licence Ouverte / Etalab 2.0.

Delio by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025: Unranked
Trend vs 5 yrs ago: —
Best rank ever: #3,389; 1963
Peak year: 1973; 9 that year
First recorded: 1915
Last recorded: 2010
All-time count: 98
Count in 2025: Under 5

Names similar to Delio

Matched on shared beginnings and endings, similar length, and comparable popularity.

Delani Delmo Delta Celio Delsin Della Delia Deluca Delan Ellio Delijah Delynn Dellas Delvis Delson Delois Milio Ezelio Dellis Deloyd Delyle Delron Delno Delmos

Sibling names for Delio

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

For a sister

Melonie Carmelita Nicola Latonia Kesha Suzanna Jenni Latricia

For a brother

Shon Erin Giuseppe Abdul Shelton Judd Alfonzo Andrea

Explore around Delio

Top names of 1973, Delio's peak year The 1970s in full Other names that peaked in 1963 Boys' names starting with D