Isobelle vs Katy
Isobelle and Katycompared 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 2012, Isobelle was ranked #451 and Katy #297 among girls in Northern Ireland.
Republic of Ireland · Girls
In 2020, Isobelle was ranked #544 and Katy #700 among girls in Republic of Ireland.
England and Wales · Girls
In 2024, Isobelle was ranked #1406 and Katy #4192 among girls in England and Wales.
Isobelle and Katy over time
Isobelle and Katy appear together in 2 published lists, across 45 years of shared records. Neither was ahead in more lists than the other.
The order between them changed and held in 2 of those lists — a change in that published list, never a claim that one name displaced the other.
Katy reached its own highest recorded position earlier in 2 of those lists, and Isobelle in none. 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.
- Repeatedly exchanged positions
Isobelle and Katy changed places 7 times in England and Wales · Girls between 1996 and 2024, ending at #1406 and #4192.
List by list
England and Wales · Girls29 shared years, 1996–2024
Isobelle held the stronger position in 13 of those years, Katy in 16.
Highest recorded here: Isobelle #265 in 2009, Katy #111 in 1996.
The order changed in 2019: Isobelle moved ahead. In 2018 they stood at #1083 and #972; by 2019 that had become #823 and #1063.
Most recent shared year, 2024: Isobelle #1406, Katy #4192.
Republic of Ireland · Girls16 shared years, 1995–2020
Isobelle held the stronger position in 9 of those years, Katy in 5.
Highest recorded here: Isobelle #348 in 2007, Katy #304 in 1997.
The order changed in 2007: Isobelle moved ahead. In 2006 they stood at #689 and #689; by 2007 that had become #348 and #468.
Most recent shared year, 2020: Isobelle #544, Katy #700.
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 | Isobelle | Katy |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | female | female |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | Not yet recorded | Not yet recorded |
| Syllables | 4 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, IE | GB-ENW, GB-NIR, IE |
| Most recent popularity observation | England and Wales · Girls #1406 (2024) | England and Wales · Girls #4192 (2024) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 76/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Isobelle has 4 syllables, compared with 2 for Katy.
- Both names have recorded usage in GB-ENW, GB-NIR, IE.
How each name got here
Isobelle
Popularity journey
First recorded1995
First recorded at #516 among girls in Republic of Ireland in 1995 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1996–2024
Highest recorded position: #265 among girls in England and Wales, in 2009 (recorded 1996–2024).
England and Wales · Girls
Most recent2024
Most recently recorded at #1406 among girls in England and Wales, in 2024.
England and Wales · Girls
Katy
Popularity journey
First recorded1982
First recorded at #399 among girls in Republic of Ireland in 1982 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1996–2024
Highest recorded position: #111 among girls in England and Wales, in 1996 (recorded 1996–2024).
England and Wales · Girls
Most recent2024
Most recently recorded at #4192 among girls in England and Wales, in 2024.
England and Wales · Girls