Namewise

Jack vs Sean

Jack and Seancompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.

Head to head

Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.

  • New South Wales, Australia · Boys

    In 2007, Jack was ranked #1 and Sean #85 among boys in New South Wales, Australia.

  • New Zealand · Boys

    In 2007, Jack was ranked #1 and Sean #83 among boys in New Zealand.

  • Republic of Ireland · Boys

    In 2025, Jack was ranked #2 and Sean #141 among boys in Republic of Ireland.

  • Northern Ireland · Boys

    In 2024, Jack was ranked #4 and Sean #48 among boys in Northern Ireland.

  • Scotland · Boys

    In 2024, Jack was ranked #7 and Sean #234 among boys in Scotland.

  • England and Wales · Boys

    In 2025, Jack was ranked #24 and Sean #615 among boys in England and Wales.

  • Norway · Boys

    In 2022, Jack was ranked #382 and Sean #496 among boys in Norway.

Jack and Sean over time

Jack and Sean appear together in 6 published lists, across 196 years of shared records. Jack held the stronger position in more years in 5 of them, Sean in 1.

The order between them changed and held in 3 of those lists — a change in that published list, never a claim that one name displaced the other.

Sean reached its own highest recorded position earlier in 3 of those lists, Jack in 1. Each position is a place inside its own list, so this compares when they peaked and never how high.

Counted list by list. Two names in the same published list are measured on the same scale in the same year, so those comparisons are real — but positions from different lists are not, so nothing here is combined into an overall standing.

How this pair is related

The relationship kinds these two qualify for, each under its own stated rule. Every one is drawn from a list they both appear in.

  • One moved ahead of the other

    In 1989, Jack moved ahead of Sean in New South Wales, Australia · Boys — #52 and #47 the year before became #44 and #45.

  • Repeatedly exchanged positions

    Jack and Sean changed places 10 times in Norway · Boys between 1965 and 2022, ending at #382 and #496.

  • Closest over the longest run

    Across 21 shared years in New South Wales, Australia · Boys, Jack and Sean averaged 46.2 places apart, ending at #1 and #85.

  • Mirrored each other

    Over 21 shared years in New South Wales, Australia · Boys, Jack rose about as far as Sean fell — from #95 and #52 in 1986 to #1 and #85 in 2007.

  • Longest-running competitions

    Jack and Sean were both ranked in England and Wales · Boys for 30 years, from 1996 to 2025, ending at #24 and #615.

  • Peaked in the same years

    Both reached their highest recorded position in England and Wales · Boys within 2 years — Jack #1 in 1996, Sean #49 in 1996.

List by list

  • Republic of Ireland · Boys53 shared years, 1970–2025

    Jack held the stronger position in 23 of those years, Sean in 30.

    Highest recorded here: Jack #1 in 2000, Sean #1 in 1997.

    The order changed in 2007: Jack moved ahead. In 2006 they stood at #2 and #1; by 2007 that had become #1 and #2.

    Most recent shared year, 2025: Jack #2, Sean #141.

  • Norway · Boys44 shared years, 1965–2022

    Jack held the stronger position in 24 of those years, Sean in 20.

    Highest recorded here: Jack #240 in 1967, Sean #185 in 2007.

    The order between them never changed and held in this list.

    Most recent shared year, 2022: Jack #382, Sean #496.

  • England and Wales · Boys30 shared years, 1996–2025

    Jack held the stronger position in 30 of those years, Sean in 0.

    Highest recorded here: Jack #1 in 1996, Sean #49 in 1996.

    The order between them never changed and held in this list.

    Most recent shared year, 2025: Jack #24, Sean #615.

  • Northern Ireland · Boys28 shared years, 1997–2024

    Jack held the stronger position in 28 of those years, Sean in 0.

    Highest recorded here: Jack #1 in 2001, Sean #13 in 2001.

    The order between them never changed and held in this list.

    Most recent shared year, 2024: Jack #4, Sean #48.

  • New South Wales, Australia · Boys21 shared years, 1986–2007

    Jack held the stronger position in 18 of those years, Sean in 3.

    Highest recorded here: Jack #1 in 2003, Sean #42 in 1990.

    The order changed in 1989: Jack moved ahead. In 1988 they stood at #52 and #47; by 1989 that had become #44 and #45.

    Most recent shared year, 2007: Jack #1, Sean #85.

  • New Zealand · Boys20 shared years, 1988–2007

    Jack held the stronger position in 14 of those years, Sean in 6.

    Highest recorded here: Jack #1 in 2005, Sean #28 in 1995.

    The order changed in 1994: Jack moved ahead. In 1993 they stood at #37 and #29; by 1994 that had become #24 and #33.

    Most recent shared year, 2007: Jack #1, Sean #83.

Two names moving past each other in a ranking is a fact about the ranking. Namewise does not claim one name displaced the other, that families chose between them, or that either influenced the other — none of that is in this data.

Where to go next

Comparisons that share a name, a rule or a published list with this one. Each is an existing comparison page with its own evidence — nothing here says these pairs are alike.

Other comparisons involving Jack

Pairs where Jack shares a published list with another name, each measured inside one registrar's own list.

Other comparisons involving Sean

Pairs where Sean shares a published list with another name, each measured inside one registrar's own list.

Other pairs with the same kind of relationship

Pairs that qualify under the same rule as this one — one moved ahead of the other.

All one moved ahead of the other→

Other pairs from Republic of Ireland lists

Pairs measured inside Republic of Ireland's own published lists, where this pair's strongest relationship is also recorded. Positions in these lists are not comparable with another registrar's.

Republic of Ireland overview→

Other pairs ranked together in the 2020s

Pairs both ranked in the same published list at some point between 2020 and 2029.

The 2020s across all registrars→

Side by side

Side-by-side comparison of Jack, Sean
FieldJackSean
Record typeEditorially researched profileEditorially researched profile
Gender usagemalemale
MeaningGod is gracious (via John), though now used as an independent name.The Irish form of John, ultimately carrying the meaning 'Yahweh is gracious' via its Hebrew ancestry.
OriginEnglish, historically a diminutive of JohnIrish, Anglicised form of Sean, via Hebrew John
Pronunciation/ˈdʒæk//ʃɔːn/
Syllables11
Common variants / nicknamesJankinNot yet recorded
Recorded regional usageAU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZAU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ
Most recent popularity observationRepublic of Ireland · Boys #2 (2025)Republic of Ireland · Boys #141 (2025)
Pronunciation clarity (demonstration score)90/10090/100
Spelling simplicity (demonstration score)95/10095/100
International familiarity (demonstration score)100/100100/100
Data Confidencehighmedium

What the data shows

  • Jack is recorded with a English, historically a diminutive of John origin, while Sean is recorded with a Irish, Anglicised form of Sean, via Hebrew John origin.
  • Jack and Sean both have 1 syllable.
  • Jack's recorded meaning differs from Sean's — see the table above for each.
  • Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ.
  • The available evidence gives Jack a "high" Data Confidence level and Sean a "medium" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.

How each name got here

Jack

Popularity journey

  1. First recorded1945

    First recorded at #171 among boys in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    Norway · Boys

  2. Highest recorded1996–2025

    Highest recorded position: #1 among boys in England and Wales, in 1996 (recorded 1996–2025).

    England and Wales · Boys

  3. Most recent2025

    Most recently recorded at #24 among boys in England and Wales, in 2025.

    England and Wales · Boys

Sean

Popularity journey

  1. First recorded1963

    First recorded at #82 among boys in New South Wales, Australia in 1963 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    New South Wales, Australia · Boys

  2. Highest recorded1964–2025

    Highest recorded position: #1 among boys in Republic of Ireland, in 1997 (recorded 1964–2025).

    Republic of Ireland · Boys

  3. Most recent2025

    Most recently recorded at #615 among boys in England and Wales, in 2025.

    England and Wales · Boys