Sadie vs Tammy
Sadie and Tammycompared 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 2014, Sadie was ranked #39 and Tammy #584 among girls in Republic of Ireland.
England and Wales · Girls
In 2025, Sadie was ranked #134 and Tammy #5927 among girls in England and Wales.
Northern Ireland · Girls
In 2008, Sadie was ranked #277 and Tammy #439 among girls in Northern Ireland.
Sadie and Tammy over time
Sadie and Tammy appear together in 2 published lists, across 52 years of shared records. Neither was ahead in more lists than the other.
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.
Tammy reached its own highest recorded position earlier in 2 of those lists, and Sadie 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.
- Mirrored each other
Over 23 shared years in Republic of Ireland · Girls, Sadie rose about as far as Tammy fell — from #471 and #352 in 1972 to #39 and #584 in 2014.
List by list
England and Wales · Girls29 shared years, 1996–2025
Sadie held the stronger position in 29 of those years, Tammy in 0.
Highest recorded here: Sadie #129 in 2023, Tammy #364 in 1996.
The order between them never changed and held in this list.
Most recent shared year, 2025: Sadie #134, Tammy #5927.
Republic of Ireland · Girls23 shared years, 1972–2014
Sadie held the stronger position in 10 of those years, Tammy in 11.
Highest recorded here: Sadie #39 in 2014, Tammy #242 in 1993.
The order changed in 2003: Sadie moved ahead. In 2002 they stood at #352 and #267; by 2003 that had become #314 and #403.
Most recent shared year, 2014: Sadie #39, Tammy #584.
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.
Where to go next
Comparisons that share a name, a rule or a published list with this one. Each is an existing comparison page with its own evidence — nothing here says these pairs are alike.
Other comparisons involving Sadie
Pairs where Sadie shares a published list with another name, each measured inside one registrar's own list.
- Isla vs Sadie
Both reached their highest recorded position in Northern Ireland · Girls within 2 years — Isla #1 in 2023, Sadie #22 in 2023.
Isla · Sadie · 19 shared years, 2005–2024 · Peaked in the same years
- Lily vs Sadie
Both reached their highest recorded position in Republic of Ireland · Girls within 2 years — Lily #1 in 2025, Sadie #5 in 2025.
Lily · Sadie · 29 shared years, 1981–2025 · Peaked in the same years
- Amelia vs Sadie
In 2025, Sadie moved ahead of Amelia in Republic of Ireland · Girls — #8 and #9 the year before became #12 and #5.
Amelia · Sadie · 36 shared years, 1964–2025 · One moved ahead of the other
Side by side
| Field | Sadie | Tammy |
|---|---|---|
| Record type | Editorially researched profile | Official statistical record (evidence-only) |
| Gender usage | female | female |
| Meaning | A diminutive form of the name Sarah. | Not yet recorded |
| Origin | Biblical Hebrew, diminutive form | Not yet recorded |
| Pronunciation | /ˈseɪ.di/ | Not yet recorded |
| Syllables | 2 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ | AU-NSW, GB-ENW, GB-NIR, IE |
| Most recent popularity observation | Republic of Ireland · Girls #5 (2025) | England and Wales · Girls #5927 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 94/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Sadie has a recorded origin (Biblical Hebrew, diminutive form); Tammy does not have one recorded yet.
- Sadie and Tammy both have 2 syllables.
- A meaning is recorded for Sadie; Tammy doesn't have one written yet.
- Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, IE.
How each name got here
Sadie
Popularity journey
First recorded1964
First recorded at #372 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: #5 among girls in Republic of Ireland, in 2025 (recorded 1964–2025).
Republic of Ireland · Girls
Most recent2025
Most recently recorded at #134 among girls in England and Wales, in 2025.
England and Wales · Girls
Tammy
Popularity journey
First recorded1969
First recorded at #95 among girls in New South Wales, Australia in 1969 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New South Wales, Australia · Girls
Highest recorded1969–1981
Highest recorded position: #57 among girls in New South Wales, Australia, in 1977 (recorded 1969–1981).
New South Wales, Australia · Girls
Most recent2025
Most recently recorded at #5927 among girls in England and Wales, in 2025.
England and Wales · Girls