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Rajko

Boys' name

Form of Radoslav

Rajko has been given to 15 babies in the U.S. since 2008. 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 2008, with 9 recorded.

Babies named Rajko, 2009

1 in 637,000

Rajko over time, 1880–2025

Boys
02.557.51018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Rajko: meaning, origin, and history

Form of Radoslav

Deeper origin not confirmed in the cited records

What Rajko means

Rajko is a form of Radoslav.

Origin, language, and formation

Rajko is used in Serbo-Croatian and Slovene.

Related names and everyday forms

Related names include Radoslav.

Pronunciation and spelling

In Serbo-Croatian, Rajko is pronounced /rǎːjko/.

American usage and historical context

In the United States, 15 boys were recorded with the name Rajko between 2008 and 2009. Its highest annual count was 9 in 2008; its best national rank was #8,843 in 2008.

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 Rajko?

Rajko had fewer than 5 recorded uses in 2025, so these figures use 2009, the last year it was published.

Among all babies, 2009
1 in 637,000
6 of 3,820,315 births
Among boys only
1 in 331,000
<0.01% of boys
Rank, 2009
Unranked
Fewer than 5 uses
Coin-flip room size
441,341 kids
Even odds of a second one

Where Rajko 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 2009 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 441,341 children born in 2009 and it's an even bet that one of them is another Rajko. In a class of 30 the chance is Under 1%.

When Rajkos were born

Half of everyone ever recorded as Rajko was born before 2008 — so the typical Rajko is around 17 today.

Median birth year
2008
About 17 years old
Biggest decade
2000s
100.0% of all use
Born in the last 25 years
100.0%
A modern name
Recorded since 1950
15
People you could plausibly meet
Choose a decade

2000s — 100.0% of all recorded uses (15).

Is Rajko 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 2008 (9)
Years since peak
17
Years
Year-to-year steadiness
Not enough data
Too few years
Best rank ever
#8,843
2008

Spellings of Rajko

Rajko is not the most common spelling — Marko is, with 43.6% against Rajko's 0.15%.

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.

Rajko around the world

Where Rajko 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
    1973–1984
    #2,854
    in 1984
  • South Australia
    1959–1985
    #449
    in 1985

Popularity data from Institut national de la statistique et des études économiques and Consumer and Business Services (South Australia). INSEE data under Licence Ouverte / Etalab 2.0. CBS SA data under CC BY 4.0.

Rajko 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
#8,843
2008
Peak year
2008
9 that year
First recorded
2008
Last recorded
2009
All-time count
15
Count in 2025
Under 5

Names similar to Rajko

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

RajitRajabRajaeeRajaiRajaunRajayRajaeRajuanRajenRajahnRajbirRajuRajatRajahRajohnRajdeepRajinderRajonZeljkoRajanRajiRajneeshRajvirRajkumar

Sibling names for Rajko

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 Rajko

Top names of 2008, Rajko's peak yearThe 2000s in fullOther names that peaked in 2008Boys' names starting with RSlovenian Boy Names