Kajsa vs Sissel
Kajsa and Sisselcompared 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 2023, Kajsa was ranked #312 and Sissel #529 among girls in Norway.
Kajsa and Sissel over time
Kajsa and Sissel appear together in 1 published list, across 23 years of shared records. Sissel held the stronger position in more years in 1 of them, Kajsa 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.
Sissel reached its own highest recorded position earlier in 1 of those lists, and Kajsa 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
Norway · Girls23 shared years, 1979–2023
Kajsa held the stronger position in 9 of those years, Sissel in 14.
Highest recorded here: Kajsa #207 in 2009, Sissel #89 in 1979.
The order changed in 2000: Kajsa moved ahead. In 1999 they stood at #471 and #445; by 2000 that had become #299 and #627.
Most recent shared year, 2023: Kajsa #312, Sissel #529.
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 | Kajsa | Sissel |
|---|---|---|
| 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 | 2 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | NO | NO |
| Most recent popularity observation | Norway · Girls #265 (2025) | Norway · Girls #529 (2023) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 94/100 | 88/100 |
| International familiarity (demonstration score) | 40/100 | 40/100 |
| Data Confidence | medium | medium |
What the data shows
- Kajsa and Sissel both have 2 syllables.
- Both names have recorded usage in NO.
How each name got here
Kajsa
Popularity journey
First recorded1979
First recorded at #576 among girls in Norway in 1979 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1979–2025
Highest recorded position: #159 among girls in Norway, in 2003 (recorded 1979–2025).
Norway · Girls
Most recent2025
Most recently recorded at #265 among girls in Norway, in 2025.
Norway · Girls
Sissel
Popularity journey
First recorded1945
First recorded at #34 among girls in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1945–2023
Highest recorded position: #11 among girls in Norway, in 1958 (recorded 1945–2023).
Norway · Girls
Most recent2023
Most recently recorded at #529 among girls in Norway, in 2023.
Norway · Girls