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Cecilio

#8,370 in 2025Boys' name

Form of Caecilius

Cecilio has been given to 2,411 babies in the U.S. since 1909. In 2025 it ranked #8,370 of 13,926 boys’ names in use. Its peak year was 1998, with 39 recorded.

Babies named Cecilio, 2025

1 in 368,000

Cecilio over time, 1880–2025

Boys
01020304018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Cecilio: meaning, origin, and history

Form of Caecilius

Deeper origin not confirmed in the cited records

What Cecilio means

Cecilio is a form of Caecilius.

Origin, language, and formation

Cecilio is used in Spanish.

Related names and everyday forms

Related names include Caecilius.

Pronunciation and spelling

In Spanish, Cecilio is pronounced /θeˈθiljo/.

American usage and historical context

In the United States, 2,411 boys were recorded with the name Cecilio between 1909 and 2025. Its highest annual count was 39 in 1998; its best national rank was #1,350 in 1945.

Over 5 years its rank fell, from #5,281 in 2020 to #8,370 in 2025. Over 10 years its rank fell, from #6,387 in 2015 to #8,370 in 2025.

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 Cecilio?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 368,000
9 of 3,315,165 births
Among boys only
1 in 190,000
<0.01% of boys
Rank, 2025
#8,370
of 13,926 boys’ names in use
Coin-flip room size
255,323 kids
Even odds of a second one

Where Cecilio 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 2025 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 255,323 children born in 2025 and it's an even bet that one of them is another Cecilio. In a class of 30 the chance is Under 1%.

When Cecilios were born

Half of everyone ever recorded as Cecilio was born before 1976 — so the typical Cecilio is around 49 today.

Median birth year
1976
About 49 years old
Biggest decade
1990s
13.4% of all use
Born in the last 25 years
18.0%
Spread across generations
Recorded since 1950
1,818
People you could plausibly meet
Choose a decade

1990s — 13.4% of all recorded uses (322).

Is Cecilio 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
−2,418
Places dropped
Rank vs 5 years ago
−3,089
Places dropped
Rank vs 10 years ago
−1,983
Places dropped
Births vs 10 years ago
0.69×
Fewer babies than then
Share of its own peak
23.1%
Peak was 1998 (39)
Years since peak
27
Years
Year-to-year steadiness
Volatile
34.6% average annual change
Best rank ever
#1,350
1945

Spellings of Cecilio

Cecilio is not the most common spelling — Cecil is, with 65.5% against Cecilio's 1.5%.

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.

Where Cecilio is used

Across 1910–2025, Cecilio was most concentrated in Texas — about 1 in 14,286 boys, against 1 in 40,456 across all states with data. It was least common in Illinois (1 in —).

07 per 100,000

Most concentrated

  1. 1Texas1 in 14,286
  2. 2California1 in 50,000
  3. 3New Mexico1 in 100,000
  4. 4New York1 in 100,000
  5. 5Illinois1 in —

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Cecilio has too little recent state data to map, so this covers all years from 1910.

Cecilio around the world

Where Cecilio 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
    1923–2004
    #4,279
    in 2004

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

Notable people named Cecilio

People whose public names include Cecilio, backed by Wikidata given-name records and ordered by linked Wikimedia pages. The name may be a middle name.

People data from Wikidata (CC0). Fame is measured, not judged — the order reflects how widely each person is documented, not the U.S. birth records popularity this page is otherwise about.

Cecilio in other languages

Cross-language forms and variants of Cecilio. Linked forms have their own page here.

CeciliCecyliusz

Variant forms from Wikidata (CC0). Most are used mainly outside the United States; U.S. birth records statistics cover US usage only.

Cecilio by the numbers

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

As a boy's name

Rank in 2025
#8,370
Trend vs 5 yrs ago
Down 3,089
Best rank ever
#1,350
1945
Peak year
1998
39 that year
First recorded
1909
Last recorded
2025
All-time count
2,411
Count in 2025
9

Names similar to Cecilio

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

RosalioRojelioBasilioEulalioBraulioCornelioVirgilioAurelioEmillioCecelioGiulioEvelioAttilioAmelioEmelioRogelioCeciliaAmilioElioMaurilioAmillioCecileHelioNatalio

Names with a curve like Cecilio

Not spelling — timing. These names rose, peaked and faded in the same years as Cecilio, so they read as being from the same moment even when they look nothing alike.

FelicianoFidencioModestoDionicioJacqueJacintoConradoLauroEdmundoCandidoEsequielDelfino

Sibling names for Cecilio

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

Explore around Cecilio

Top names of 1998, Cecilio's peak yearThe 1990s in fullOther names that peaked in 1945Boys' names starting with C