Aideen vs Katlyn
Aideen and Katlyncompared 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.
Republic of Ireland · Girls
In 2012, Aideen was ranked #244 and Katlyn #907 among girls in Republic of Ireland.
Northern Ireland · Girls
In 2004, Aideen was ranked #316 and Katlyn #316 among girls in Northern Ireland.
England and Wales · Girls
In 2013, Aideen was ranked #5742 and Katlyn #5742 among girls in England and Wales.
Aideen and Katlyn over time
Aideen and Katlyn appear together in 1 published list, across 14 years of shared records. Aideen held the stronger position in more years in 1 of them, Katlyn in 0.
In none of those lists did their order change and stay changed.
Aideen reached its own highest recorded position earlier in 1 of those lists, and Katlyn 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.
List by list
Republic of Ireland · Girls14 shared years, 1997–2012
Aideen held the stronger position in 14 of those years, Katlyn in 0.
Highest recorded here: Aideen #115 in 1997, Katlyn #238 in 2002.
The order between them never changed and held in this list.
Most recent shared year, 2012: Aideen #244, Katlyn #907.
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 | Aideen | Katlyn |
|---|---|---|
| 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 | 2 | 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 | Republic of Ireland · Girls #885 (2025) | England and Wales · Girls #4063 (2017) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 88/100 | 88/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Aideen and Katlyn both have 2 syllables.
- Both names have recorded usage in GB-ENW, GB-NIR, IE.
How each name got here
Aideen
Popularity journey
First recorded1964
First recorded at #171 among girls in Republic of Ireland in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1964–2025
Highest recorded position: #106 among girls in Republic of Ireland, in 1991 (recorded 1964–2025).
Republic of Ireland · Girls
Most recent2025
Most recently recorded at #885 among girls in Republic of Ireland, in 2025.
Republic of Ireland · Girls
Katlyn
Popularity journey
First recorded1997
First recorded at #2738 among girls in England and Wales in 1997 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Girls
Highest recorded1998–2007
Highest recorded position: #213 among girls in Northern Ireland, in 1998 (recorded 1998–2007).
Northern Ireland · Girls
Most recent2017
Most recently recorded at #4063 among girls in England and Wales, in 2017.
England and Wales · Girls