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Sergei

#13,573 in 2025Boys' name

Alternate transcription of Sergey

Sergei has been given to 376 babies in the U.S. since 1925. In 2025 it ranked #13,573 of 13,926 boys’ names in use. Its peak year was 1998, with 16 recorded.

Babies named Sergei, 2025

1 in 663,000

Sergei over time, 1880–2025

Boys
0510152018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Sergei: meaning, origin, and history

Alternate transcription of Sergey

Deeper origin not confirmed in the cited records

What Sergei means

Sergei is a alternate transcription of Sergey.

Documented naming usage and pronunciation

Sergei is used in Russian and Bulgarian.

Another recorded pronunciation is /sʲɪr.ˈɡʲej/ for Sergei.

Meaning behind the documented name family

The name developed through Sergei → Sergey → Серге́й. The family’s meaning is “Sergey's, Sergei's”, recorded in Russian with the source elements Серге́й.

Origin, language, and formation

Sergei is used in English and Estonian.

Related names and everyday forms

Related names include Sergey and Серге́й.

American usage and historical context

In the United States, 376 boys were recorded with the name Sergei between 1925 and 2025. Its highest annual count was 16 in 1998; its best national rank was #3,066 in 1952.

Over 5 years its rank rose, from #13,710 in 2020 to #13,573 in 2025. Over 10 years its rank rose, from #13,708 in 2015 to #13,573 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 Sergei?

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

Among all babies, 2025
1 in 663,000
5 of 3,315,165 births
Among boys only
1 in 342,000
<0.01% of boys
Rank, 2025
#13,573
of 13,926 boys’ names in use
Coin-flip room size
459,581 kids
Even odds of a second one

Where Sergei 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 459,581 children born in 2025 and it's an even bet that one of them is another Sergei. In a class of 30 the chance is Under 1%.

When Sergeis were born

Half of everyone ever recorded as Sergei was born before 1997 — so the typical Sergei is around 28 today.

Median birth year
1997
About 28 years old
Biggest decade
2000s
22.9% of all use
Born in the last 25 years
37.5%
Spread across generations
Recorded since 1950
359
People you could plausibly meet
Choose a decade

2000s — 22.9% of all recorded uses (86).

Is Sergei 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
+137
Places climbed
Rank vs 10 years ago
+135
Places climbed
Births vs 10 years ago
1.00×
More babies than then
Share of its own peak
31.3%
Peak was 1998 (16)
Years since peak
27
Years
Year-to-year steadiness
Volatile
30.4% average annual change
Best rank ever
#3,066
1952

Spellings of Sergei

Sergei is not the most common spelling — Sergio is, with 97.6% against Sergei's 0.45%.

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.

Sergei around the world

Where Sergei 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.

  • England & Wales
    2013–2013
    #3,822
    in 2013
  • France
    1996–2020
    #5,985
    in 2020
  • Canada
    1992–1992
    #1,557
    in 1992
  • South Australia
    1959–1970
    #540
    in 1970

Popularity data from Office for National Statistics, Institut national de la statistique et des études économiques, Statistics Canada and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. INSEE data under Licence Ouverte / Etalab 2.0. StatCan data under Statistics Canada Open Licence. CBS SA data under CC BY 4.0.

Sergei by the numbers

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

As a boy's name

Rank in 2025
#13,573
Trend vs 5 yrs ago
Up 137
Best rank ever
#3,066
1952
Peak year
1998
16 that year
First recorded
1925
Last recorded
2025
All-time count
376
Count in 2025
5

Names similar to Sergei

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

SergeySerjioSerigneSergiSergeSerapioSerafinSerenSeraphimSerafinoServandoSerigoSerajSeraphSeraniSerjSeraphinSerenitySerenaSerkanSerafimSergioSeriousSeraiah

Sibling names for Sergei

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 Sergei

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