Aileen vs Katelynn
Aileen and Katelynncompared 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 2023, Aileen was ranked #727 and Katelynn #856 among girls in Republic of Ireland.
England and Wales · Girls
In 2023, Aileen was ranked #2201 and Katelynn #4709 among girls in England and Wales.
Aileen and Katelynn over time
Aileen and Katelynn appear together in 2 published lists, across 48 years of shared records. Neither was ahead in more lists than the other.
In none of those lists did their order change and stay changed.
Aileen reached its own highest recorded position earlier in 2 of those lists, and Katelynn 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
Aileen and Katelynn changed places 4 times in England and Wales · Girls between 1996 and 2023, ending at #2201 and #4709.
List by list
Republic of Ireland · Girls25 shared years, 1990–2023
Aileen held the stronger position in 12 of those years, Katelynn in 10.
Highest recorded here: Aileen #118 in 1990, Katelynn #238 in 2001.
The order between them never changed and held in this list.
Most recent shared year, 2023: Aileen #727, Katelynn #856.
England and Wales · Girls23 shared years, 1996–2023
Aileen held the stronger position in 6 of those years, Katelynn in 16.
Highest recorded here: Aileen #1434 in 1996, Katelynn #1209 in 2004.
The order between them never changed and held in this list.
Most recent shared year, 2023: Aileen #2201, Katelynn #4709.
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 | Aileen | Katelynn |
|---|---|---|
| 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 | 3 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, IE, NO | GB-ENW, GB-NIR, IE |
| Most recent popularity observation | Republic of Ireland · Girls #718 (2025) | Republic of Ireland · Girls #856 (2023) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 88/100 | 76/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Aileen has 2 syllables, compared with 3 for Katelynn.
- Both names have recorded usage in GB-ENW, GB-NIR, IE.
How each name got here
Aileen
Popularity journey
First recorded1964
First recorded at #100 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: #81 among girls in Republic of Ireland, in 1983 (recorded 1964–2025).
Republic of Ireland · Girls
Most recent2025
Most recently recorded at #718 among girls in Republic of Ireland, in 2025.
Republic of Ireland · Girls
Katelynn
Popularity journey
First recorded1990
First recorded at #517 among girls in Republic of Ireland in 1990 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1990–2023
Highest recorded position: #238 among girls in Republic of Ireland, in 2001 (recorded 1990–2023).
Republic of Ireland · Girls
Most recent2023
Most recently recorded at #4709 among girls in England and Wales, in 2023.
England and Wales · Girls