Alejo

#4,543 in 2025Boys' name

Helper, defender

Alejo has been given to 904 babies in the U.S. since 1909. In 2025 it ranked #4,543 of 13,926 boys’ names in use. Its peak year was 2025, with 22 recorded.

Babies named Alejo, 2025

1 in 151,000

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Alejo: meaning, origin, and history

Helper, defender

Ancient Greek

What Alejo means

Alejo means “helper, defender”, associated with Aléxios.

Origin, language, and formation

Alejo is used in Esperanto and Spanish. Its origins include Ancient Greek.

Related names and everyday forms

Related names include Alexis.

Pronunciation and spelling

In Esperanto, Alejo is pronounced /aˈlejo/.

American usage and historical context

In the United States, 904 boys were recorded with the name Alejo between 1909 and 2025. Its highest annual count was 22 in 2025; its best national rank was #1,444 in 1909.

Over 5 years its rank rose, from #6,303 in 2020 to #4,543 in 2025. Over 10 years its rank rose, from #5,514 in 2015 to #4,543 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 Alejo?

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

Among all babies, 2025: 1 in 151,000; 22 of 3,315,165 births
Among boys only: 1 in 77,600; <0.01% of boys
Rank, 2025: #4,543; of 13,926 boys’ names in use
Coin-flip room size: 104,451 kids; Even odds of a second one

Where Alejo 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 104,451 children born in 2025 and it's an even bet that one of them is another Alejo. In a class of 30 the chance is Under 1%.

When Alejos were born

Half of everyone ever recorded as Alejo was born before 1987 — so the typical Alejo is around 38 today.

Median birth year: 1987; About 38 years old
Biggest decade: 2000s; 13.8% of all use
Born in the last 25 years: 34.3%; Spread across generations
Recorded since 1950: 732; People you could plausibly meet

Choose a decade

2000s — 13.8% of all recorded uses (125).

Is Alejo 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: +3,244; Places climbed
Rank vs 5 years ago: +1,760; Places climbed
Rank vs 10 years ago: +971; Places climbed
Births vs 10 years ago: 1.38×; More babies than then
Share of its own peak: 100.0%; Peak was 2025 (22)
Years since peak: Peaking now; At its all-time high
Year-to-year steadiness: Volatile; 44.5% average annual change
Best rank ever: #1,444; 1909

Spellings of Alejo

Alejo is not the most common spelling — Alex is, with 44.3% against Alejo's 0.14%.

Alex44.3%286,169
Leo40.2%259,988
Alec8.5%55,152
Aldo2.7%17,728
Cleo1.8%11,527
Alek0.71%4,563
Alen0.37%2,371
Kaleo0.35%2,252

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 Alejo is used

Across 1910–2025, Alejo was most concentrated in California — about 1 in 100,000 boys, against 1 in 146,172 across all states with data. It was least common in Texas (1 in 100,000).

11 per 100,000

State popularity map

Most concentrated

1California1 in 100,000
2Texas1 in 100,000

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. Alejo has too little recent state data to map, so this covers all years from 1910.

Alejo by the numbers

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

As a boy's name

Rank in 2025: #4,543
Trend vs 5 yrs ago: Up 1,760
Best rank ever: #1,444; 1909
Peak year: 2025; 22 that year
First recorded: 1909
Last recorded: 2025
All-time count: 904
Count in 2025: 22

Names similar to Alejo

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

Aleem Aleks Alexi Alexei Alexey Aleck Alen Aleph Aleksey Alexx Alem Aleki Aleksei Aleric Alexy Alek Alexa Alekai Alessio Alesso Alexios Aleister Alexandr Alexys

Sibling names for Alejo

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

Leonor Karleigh Keren Kendyl Hayleigh Eloisa Shaniya Leigha

For a brother

Evans Hamilton Caesar Tobin Jerimiah Jorden Leander Henri

Explore around Alejo

Top names of 2025, Alejo's peak year The 2020s in full Other names that peaked in 1909 Boys' names starting with A