Namewise

Erin vs Katie

Erin and Katiecompared 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 · Girls

    In 2024, Erin was ranked #25 and Katie #47 among girls in Northern Ireland.

  • Republic of Ireland · Girls

    In 2025, Erin was ranked #71 and Katie #41 among girls in Republic of Ireland.

  • New Zealand · Girls

    In 2004, Erin was ranked #96 and Katie #46 among girls in New Zealand.

  • England and Wales · Girls

    In 2025, Erin was ranked #72 and Katie #650 among girls in England and Wales.

  • Scotland · Girls

    In 2024, Erin was ranked #72 and Katie #131 among girls in Scotland.

  • New South Wales, Australia · Girls

    In 2007, Erin was ranked #78 and Katie #91 among girls in New South Wales, Australia.

Erin and Katie over time

Erin and Katie appear together in 5 published lists, across 155 years of shared records. Katie held the stronger position in more years in 3 of them, Erin 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.

Katie reached its own highest recorded position earlier in 4 of those lists, Erin 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 2010, Erin moved ahead of Katie in England and Wales · Girls — #33 and #31 the year before became #35 and #40.

  • Repeatedly exchanged positions

    Erin and Katie changed places 6 times in Republic of Ireland · Girls between 1977 and 2025, ending at #71 and #41.

  • Closest over the longest run

    Across 28 shared years in New South Wales, Australia · Girls, Erin and Katie averaged 18.9 places apart, ending at #78 and #91.

  • Longest-running competitions

    Erin and Katie were both ranked in England and Wales · Girls for 30 years, from 1996 to 2025, ending at #72 and #650.

  • Peaked in the same years

    Both reached their highest recorded position in New South Wales, Australia · Girls within 2 years — Erin #11 in 1984, Katie #23 in 1986.

List by list

  • Republic of Ireland · Girls49 shared years, 1977–2025

    Erin held the stronger position in 5 of those years, Katie in 44.

    Highest recorded here: Erin #34 in 2006, Katie #2 in 2004.

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

    Most recent shared year, 2025: Erin #71, Katie #41.

  • England and Wales · Girls30 shared years, 1996–2025

    Erin held the stronger position in 16 of those years, Katie in 14.

    Highest recorded here: Erin #27 in 2007, Katie #9 in 2004.

    The order changed in 2010: Erin moved ahead. In 2009 they stood at #33 and #31; by 2010 that had become #35 and #40.

    Most recent shared year, 2025: Erin #72, Katie #650.

  • New South Wales, Australia · Girls28 shared years, 1977–2007

    Erin held the stronger position in 24 of those years, Katie in 4.

    Highest recorded here: Erin #11 in 1984, Katie #23 in 1986.

    The order changed in 1981: Erin moved ahead. In 1980 they stood at #43 and #42; by 1981 that had become #18 and #34.

    Most recent shared year, 2007: Erin #78, Katie #91.

  • Northern Ireland · Girls28 shared years, 1997–2024

    Erin held the stronger position in 6 of those years, Katie in 21.

    Highest recorded here: Erin #5 in 2009, Katie #1 in 2004.

    The order changed in 2020: Erin moved ahead. In 2019 they stood at #23 and #19; by 2020 that had become #18 and #24.

    Most recent shared year, 2024: Erin #25, Katie #47.

  • New Zealand · Girls20 shared years, 1977–2004

    Erin held the stronger position in 2 of those years, Katie in 18.

    Highest recorded here: Erin #36 in 1984, Katie #33 in 1981.

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

    Most recent shared year, 2004: Erin #96, Katie #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 Erin

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

Other comparisons involving Katie

Pairs where Katie 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 Northern Ireland lists

Pairs measured inside Northern 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.

Northern 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 Erin, Katie
FieldErinKatie
Record typeEditorially researched profileEditorially researched profile
Gender usagefemalefemale
MeaningAn Anglicized form of Éireann, the Irish name for Ireland itself.A diminutive of Kate, itself a short form of Katherine.
OriginIrishGreek, diminutive form
Pronunciation/ˈɛɹ.ɪn//ˈkeɪ.ti/
Syllables22
Common variants / nicknamesNot yet recordedNot yet recorded
Recorded regional usageAU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZAU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ
Most recent popularity observationRepublic of Ireland · Girls #71 (2025)Republic of Ireland · Girls #41 (2025)
Pronunciation clarity (demonstration score)90/10090/100
Spelling simplicity (demonstration score)95/10094/100
International familiarity (demonstration score)100/100100/100
Data Confidencemediummedium

What the data shows

  • Erin is recorded with a Irish origin, while Katie is recorded with a Greek, diminutive form origin.
  • Erin and Katie both have 2 syllables.
  • Erin's recorded meaning differs from Katie's — see the table above for each.
  • Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ.

How each name got here

Erin

Popularity journey

  1. First recorded1975

    First recorded at #89 among girls in New Zealand in 1975 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    New Zealand · Girls

  2. Highest recorded1997–2024

    Highest recorded position: #5 among girls in Northern Ireland, in 2009 (recorded 1997–2024).

    Northern Ireland · Girls

  3. Most recent2025

    Most recently recorded at #72 among girls in England and Wales, in 2025.

    England and Wales · Girls

Katie

Popularity journey

  1. First recorded1973

    First recorded at #508 among girls in Republic of Ireland in 1973 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    Republic of Ireland · Girls

  2. Highest recorded1997–2024

    Highest recorded position: #1 among girls in Northern Ireland, in 2004 (recorded 1997–2024).

    Northern Ireland · Girls

  3. Most recent2025

    Most recently recorded at #650 among girls in England and Wales, in 2025.

    England and Wales · Girls