Eileen vs Jo
Eileen and Jocompared 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 2018, Eileen was ranked #336 and Jo #896 among girls in Republic of Ireland.
England and Wales · Girls
In 2013, Eileen was ranked #1220 and Jo #5742 among girls in England and Wales.
Eileen and Jo over time
Eileen and Jo appear together in 2 published lists, across 34 years of shared records. Eileen held the stronger position in more years in 2 of them, Jo in 0.
The order between them changed and held in one of those lists — a change in that published list, never a claim that one name displaced the other.
Eileen reached its own highest recorded position earlier in 1 of those lists, and Jo 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.
- Peaked in the same years
Both reached their highest recorded position in England and Wales · Girls within 2 years — Eileen #916 in 1996, Jo #736 in 1996.
List by list
England and Wales · Girls17 shared years, 1996–2013
Eileen held the stronger position in 12 of those years, Jo in 5.
Highest recorded here: Eileen #916 in 1996, Jo #736 in 1996.
The order changed in 2002: Eileen moved ahead. In 2001 they stood at #1107 and #1025; by 2002 that had become #1245 and #1372.
Most recent shared year, 2013: Eileen #1220, Jo #5742.
Republic of Ireland · Girls17 shared years, 1971–2018
Eileen held the stronger position in 17 of those years, Jo in 0.
Highest recorded here: Eileen #31 in 1971, Jo #349 in 1973.
The order between them never changed and held in this list.
Most recent shared year, 2018: Eileen #336, Jo #896.
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 | Eileen | Jo |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | female | Used for both boys and girls |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | Not yet recorded | Not yet recorded |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, GB-SCT, IE, NO | GB-ENW, IE, NO |
| Most recent popularity observation | Republic of Ireland · Girls #443 (2025) | Norway · Boys #319 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 88/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Eileen has 2 syllables, compared with 1 for Jo.
- Both names have recorded usage in GB-ENW, IE, NO.
How each name got here
Eileen
Popularity journey
First recorded1945
First recorded at #324 among girls in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1964–2025
Highest recorded position: #17 among girls in Republic of Ireland, in 1964 (recorded 1964–2025).
Republic of Ireland · Girls
Most recent2025
Most recently recorded at #501 among girls in Norway, in 2025.
Norway · Girls
Jo
Popularity journey
First recorded1945
First recorded at #301 among boys in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded1945–2025
Highest recorded position: #96 among boys in Norway, in 1966 (recorded 1945–2025).
Norway · Boys
Most recent2025
Most recently recorded at #319 among boys in Norway, in 2025.
Norway · Boys