Namewise

Charlie vs Isaac

Charlie and Isaaccompared 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.

  • Northern Ireland · Boys

    In 2024, Charlie was ranked #8 and Isaac #26 among boys in Northern Ireland.

  • New Zealand · Boys

    In 2023, Charlie was ranked #9 and Isaac #46 among boys in New Zealand.

  • New South Wales, Australia · Boys

    In 2025, Charlie was ranked #12 and Isaac #26 among boys in New South Wales, Australia.

  • Republic of Ireland · Boys

    In 2025, Charlie was ranked #13 and Isaac #104 among boys in Republic of Ireland.

  • Scotland · Boys

    In 2024, Charlie was ranked #19 and Isaac #49 among boys in Scotland.

  • England and Wales · Boys

    In 2025, Charlie was ranked #22 and Isaac #36 among boys in England and Wales.

  • Norway · Boys

    In 2025, Charlie was ranked #211 and Isaac #251 among boys in Norway.

Charlie and Isaac over time

Charlie and Isaac appear together in 6 published lists, across 161 years of shared records. Charlie held the stronger position in more years in 4 of them, Isaac in 2.

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.

Isaac reached its own highest recorded position earlier in 4 of those lists, Charlie in 2. 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 2019, Charlie moved ahead of Isaac in New South Wales, Australia · Boys — #22 and #17 the year before became #14 and #18.

  • Repeatedly exchanged positions

    Charlie and Isaac changed places 7 times in Norway · Boys between 1990 and 2025, ending at #211 and #251.

  • Closest over the longest run

    Across 30 shared years in England and Wales · Boys, Charlie and Isaac averaged 29.1 places apart, ending at #22 and #36.

  • Longest-running competitions

    Charlie and Isaac were both ranked in England and Wales · Boys for 30 years, from 1996 to 2025, ending at #22 and #36.

List by list

  • Republic of Ireland · Boys32 shared years, 1994–2025

    Charlie held the stronger position in 31 of those years, Isaac in 1.

    Highest recorded here: Charlie #5 in 2022, Isaac #77 in 2014.

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

    Most recent shared year, 2025: Charlie #13, Isaac #104.

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

    Charlie held the stronger position in 30 of those years, Isaac in 0.

    Highest recorded here: Charlie #4 in 2012, Isaac #20 in 2015.

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

    Most recent shared year, 2025: Charlie #22, Isaac #36.

  • Northern Ireland · Boys28 shared years, 1997–2024

    Charlie held the stronger position in 28 of those years, Isaac in 0.

    Highest recorded here: Charlie #3 in 2013, Isaac #20 in 2020.

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

    Most recent shared year, 2024: Charlie #8, Isaac #26.

  • New South Wales, Australia · Boys26 shared years, 2000–2025

    Charlie held the stronger position in 8 of those years, Isaac in 18.

    Highest recorded here: Charlie #8 in 2024, Isaac #8 in 2015.

    The order changed in 2019: Charlie moved ahead. In 2018 they stood at #22 and #17; by 2019 that had become #14 and #18.

    Most recent shared year, 2025: Charlie #12, Isaac #26.

  • Norway · Boys24 shared years, 1990–2025

    Charlie held the stronger position in 8 of those years, Isaac in 16.

    Highest recorded here: Charlie #189 in 2017, Isaac #164 in 2014.

    The order changed in 2024: Charlie moved ahead. In 2023 they stood at #249 and #214; by 2024 that had become #216 and #262.

    Most recent shared year, 2025: Charlie #211, Isaac #251.

  • New Zealand · Boys21 shared years, 2003–2023

    Charlie held the stronger position in 15 of those years, Isaac in 6.

    Highest recorded here: Charlie #6 in 2021, Isaac #17 in 2010.

    The order changed in 2012: Charlie moved ahead. In 2011 they stood at #27 and #21; by 2012 that had become #20 and #31.

    Most recent shared year, 2023: Charlie #9, Isaac #46.

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 Charlie

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

Other comparisons involving Isaac

Pairs where Isaac 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 — closest over the longest run.

All closest over the longest run→

Other pairs from New South Wales, Australia lists

Pairs measured inside New South Wales, Australia's own published lists, where this pair's strongest relationship is also recorded. Positions in these lists are not comparable with another registrar's.

New South Wales, Australia 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 Charlie, Isaac
FieldCharlieIsaac
Record typeEditorially researched profileEditorially researched profile
Gender usagemalemale
MeaningA diminutive of Charles, ultimately interpreted as 'man' or, by an alternative theory, 'army'.Traditionally understood as 'he will laugh' or 'he laughs', tied to the biblical narrative in which Abraham and Sarah laugh at the prophecy of Isaac's birth in their old age.
OriginEnglish, via Germanic KarlBiblical Hebrew, transmitted into English via Greek Isaak and Late Latin Isaac
Pronunciation/ˈtʃɑːli//ˈaɪzək/
Syllables22
Common variants / nicknamesNot yet recordedNot 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 observationNew South Wales, Australia · Boys #12 (2025)New South Wales, Australia · Boys #26 (2025)
Pronunciation clarity (demonstration score)90/10090/100
Spelling simplicity (demonstration score)82/10094/100
International familiarity (demonstration score)100/100100/100
Data Confidencemediummedium

What the data shows

  • Charlie is recorded with a English, via Germanic Karl origin, while Isaac is recorded with a Biblical Hebrew, transmitted into English via Greek Isaak and Late Latin Isaac origin.
  • Charlie and Isaac both have 2 syllables.
  • Charlie's recorded meaning differs from Isaac's — see the table above for each.
  • Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ.

How each name got here

Charlie

Popularity journey

  1. First recorded1983

    First recorded at #282 among boys in Republic of Ireland in 1983 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    Republic of Ireland · Boys

  2. Highest recorded1997–2024

    Highest recorded position: #3 among boys in Northern Ireland, in 2013 (recorded 1997–2024).

    Northern Ireland · Boys

  3. Most recent2025

    Most recently recorded at #747 among girls in England and Wales, in 2025.

    England and Wales · Girls

Isaac

Popularity journey

  1. First recorded1964

    First recorded at #232 among boys in Republic of Ireland in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    Republic of Ireland · Boys

  2. Highest recorded1990–2025

    Highest recorded position: #8 among boys in New South Wales, Australia, in 2015 (recorded 1990–2025).

    New South Wales, Australia · Boys

  3. Most recent2025

    Most recently recorded at #36 among boys in England and Wales, in 2025.

    England and Wales · Boys