Jill vs Silja
Jill and Siljacompared 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.
Norway · Girls
In 2005, Jill was ranked #603 and Silja #359 among girls in Norway.
Jill and Silja over time
Jill and Silja appear together in 1 published list, across 25 years of shared records. Jill held the stronger position in more years in 1 of them, Silja 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.
Jill reached its own highest recorded position earlier in 1 of those lists, and Silja 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
Jill and Silja changed places 13 times in Norway · Girls between 1967 and 2005, ending at #603 and #359.
List by list
Norway · Girls25 shared years, 1967–2005
Jill held the stronger position in 17 of those years, Silja in 8.
Highest recorded here: Jill #175 in 1971, Silja #183 in 1976.
The order changed in 1999: Silja moved ahead. In 1998 they stood at #540 and #553; by 1999 that had become #618 and #333.
Most recent shared year, 2005: Jill #603, Silja #359.
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 | Jill | Silja |
|---|---|---|
| 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 | |
| Syllables | 1 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, IE, NO, NZ | NO |
| Most recent popularity observation | Republic of Ireland · Girls #747 (2022) | Norway · Girls #527 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 95/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 40/100 |
| Data Confidence | medium | medium |
What the data shows
- Jill has 1 syllable, compared with 2 for Silja.
- Both names have recorded usage in NO.
How each name got here
Jill
Popularity journey
First recorded1948
First recorded at #376 among girls in Norway in 1948 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1952–1959
Highest recorded position: #62 among girls in New South Wales, Australia, in 1952 (recorded 1952–1959).
New South Wales, Australia · Girls
Most recent2022
Most recently recorded at #747 among girls in Republic of Ireland, in 2022.
Republic of Ireland · Girls
Silja
Popularity journey
First recorded1967
First recorded at #473 among girls in Norway in 1967 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1967–2025
Highest recorded position: #183 among girls in Norway, in 1976 (recorded 1967–2025).
Norway · Girls
Most recent2025
Most recently recorded at #527 among girls in Norway, in 2025.
Norway · Girls