Sinjin

Boys' name

Variant of St John

Sinjin has been given to 376 babies in the U.S. since 1989. 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 1992, with 25 recorded.

Babies named Sinjin, 2022

1 in 677,000

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Sinjin: meaning, origin, and history

Variant of St John

Deeper origin not confirmed in the cited records

What Sinjin means

Sinjin is a variant of St John.

Documented naming usage and pronunciation

Sinjin is used in English (British, Rare).

Another recorded pronunciation is /ˈsɪn.d͡ʒɪn/ for Sinjin.

Related names and everyday forms

Related names include St John.

American usage and historical context

In the United States, 376 boys were recorded with the name Sinjin between 1989 and 2022. Its highest annual count was 25 in 1992; its best national rank was #2,806 in 1992.

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.

U.S. Social Security Administration: national name data and limitations

How common is Sinjin?

Sinjin had fewer than 5 recorded uses in 2025, so these figures use 2022, the last year it was published.

Among all babies, 2022: 1 in 677,000; 5 of 3,385,755 births
Among boys only: 1 in 349,000; <0.01% of boys
Rank, 2022: Unranked; Fewer than 5 uses
Coin-flip room size: 469,366 kids; Even odds of a second one

Where Sinjin 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 2022 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 469,366 children born in 2022 and it's an even bet that one of them is another Sinjin. In a class of 30 the chance is Under 1%.

When Sinjins were born

Half of everyone ever recorded as Sinjin was born before 1999 — so the typical Sinjin is around 26 today.

Median birth year: 1999; About 26 years old
Biggest decade: 1990s; 48.7% of all use
Born in the last 25 years: 57.7%; A modern name
Recorded since 1950: 376; People you could plausibly meet

Choose a decade

1990s — 48.7% of all recorded uses (183).

Is Sinjin 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 1992 (25)
Years since peak: 33; Years
Year-to-year steadiness: Shifting; 24.6% average annual change
Best rank ever: #2,806; 1992

Spellings of Sinjin

Sinjin is not the most common spelling — Linkin is, with 85.3% against Sinjin's 14.7%.

Linkin85.3%2,187
Sinjin14.7%376

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 Sinjin is used

Across 1910–2025, Sinjin was most concentrated in California — about 1 in — boys, against 1 in 415,064 across all states with data.

00 per 100,000

State popularity map

Most concentrated

1California1 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. Sinjin has too little recent state data to map, so this covers all years from 1910.

Sinjin 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: #2,806; 1992
Peak year: 1992; 25 that year
First recorded: 1989
Last recorded: 2022
All-time count: 376
Count in 2025: Under 5

Names similar to Sinjin

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

Sinan Sinai Sina Sinclair Sincer Sincere Yujin Sincear Sinatra Hajin Jin Sinuhe Sing Temujin Singleton Sinceer Woojin Sindey Sinjon Sinue Ryujin Raijin Benjin Sinsere

Sibling names for Sinjin

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

Ilana Danyelle Kelsea Ivonne Maira Kaylene Jacquelynn Devan

For a brother

Coty Malcom Edgardo Arnulfo Dillan Devante Rosendo Dimitri

Explore around Sinjin

Top names of 1992, Sinjin's peak year The 1990s in full Other names that peaked in 1992 Boys' names starting with S