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 2024, Erin was ranked #65 and Katie #547 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 154 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 Republic of Ireland · Girls for 49 years, from 1977 to 2025, ending at #71 and #41.
- 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 · Girls29 shared years, 1996–2024
Erin held the stronger position in 15 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, 2024: Erin #65, Katie #547.
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.
Side by side
| Field | Erin | Katie |
|---|---|---|
| Record type | Editorially researched profile | Editorially researched profile |
| Gender usage | female | female |
| Meaning | An Anglicized form of Éireann, the Irish name for Ireland itself. | A diminutive of Kate, itself a short form of Katherine. |
| Origin | Irish | Greek, diminutive form |
| Pronunciation | /ˈɛɹ.ɪn/ | /ˈkeɪ.ti/ |
| Syllables | 2 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ |
| Most recent popularity observation | Republic of Ireland · Girls #71 (2025) | Republic of Ireland · Girls #41 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | 90/100 |
| Spelling simplicity (demonstration score) | 95/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
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
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
Highest recorded1997–2024
Highest recorded position: #5 among girls in Northern Ireland, in 2009 (recorded 1997–2024).
Northern Ireland · Girls
Most recent2025
Most recently recorded at #71 among girls in Republic of Ireland, in 2025.
Republic of Ireland · Girls
Katie
Popularity journey
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
Highest recorded1997–2024
Highest recorded position: #1 among girls in Northern Ireland, in 2004 (recorded 1997–2024).
Northern Ireland · Girls
Most recent2025
Most recently recorded at #41 among girls in Republic of Ireland, in 2025.
Republic of Ireland · Girls