Isaac vs Logan
Isaac and Logancompared 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.
New South Wales, Australia · Boys
In 2024, Isaac was ranked #19 and Logan #81 among boys in New South Wales, Australia.
Northern Ireland · Boys
In 2024, Isaac was ranked #26 and Logan #67 among boys in Northern Ireland.
Scotland · Boys
In 2024, Isaac was ranked #49 and Logan #29 among boys in Scotland.
England and Wales · Boys
In 2024, Isaac was ranked #37 and Logan #76 among boys in England and Wales.
New Zealand · Boys
In 2023, Isaac was ranked #46 and Logan #79 among boys in New Zealand.
Republic of Ireland · Boys
In 2025, Isaac was ranked #104 and Logan #121 among boys in Republic of Ireland.
Isaac and Logan over time
Isaac and Logan appear together in 5 published lists, across 148 years of shared records. Isaac held the stronger position in more years in 4 of them, Logan in 1.
The order between them changed and held in 2 of those lists — a change in that published list, never a claim that one name displaced the other.
Each reached its own highest recorded position first in 2 of the lists they share.
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.
- One took the other's place near the top
In Northern Ireland · Boys, Isaac moved into the top 50 at #27 in 2023 as Logan fell out of it to #61, having been #40 the year before.
- One moved ahead of the other
In 2009, Isaac moved ahead of Logan in New Zealand · Boys — #39 and #34 the year before became #26 and #30.
- Repeatedly exchanged positions
Isaac and Logan changed places 4 times in England and Wales · Boys between 1996 and 2024, ending at #37 and #76.
- Closest over the longest run
Across 29 shared years in England and Wales · Boys, Isaac and Logan averaged 36.8 places apart, ending at #37 and #76.
- Longest-running competitions
Isaac and Logan were both ranked in New Zealand · Boys for 42 years, from 1981 to 2023, ending at #46 and #79.
- Peaked in the same years
Both reached their highest recorded position in England and Wales · Boys within 2 years — Isaac #20 in 2015, Logan #20 in 2017.
List by list
New Zealand · Boys42 shared years, 1981–2023
Isaac held the stronger position in 15 of those years, Logan in 27.
Highest recorded here: Isaac #17 in 2010, Logan #18 in 2001.
The order changed in 2009: Isaac moved ahead. In 2008 they stood at #39 and #34; by 2009 that had become #26 and #30.
Most recent shared year, 2023: Isaac #46, Logan #79.
England and Wales · Boys29 shared years, 1996–2024
Isaac held the stronger position in 22 of those years, Logan in 7.
Highest recorded here: Isaac #20 in 2015, Logan #20 in 2017.
The order between them never changed and held in this list.
Most recent shared year, 2024: Isaac #37, Logan #76.
New South Wales, Australia · Boys26 shared years, 1999–2024
Isaac held the stronger position in 26 of those years, Logan in 0.
Highest recorded here: Isaac #8 in 2015, Logan #30 in 2015.
The order between them never changed and held in this list.
Most recent shared year, 2024: Isaac #19, Logan #81.
Northern Ireland · Boys26 shared years, 1997–2024
Isaac held the stronger position in 13 of those years, Logan in 11.
Highest recorded here: Isaac #20 in 2020, Logan #10 in 2017.
The order changed in 2023: Isaac moved ahead. In 2022 they stood at #40 and #40; by 2023 that had become #27 and #61.
Most recent shared year, 2024: Isaac #26, Logan #67.
Republic of Ireland · Boys25 shared years, 1997–2025
Isaac held the stronger position in 13 of those years, Logan in 12.
Highest recorded here: Isaac #77 in 2014, Logan #41 in 2017.
The order between them never changed and held in this list.
Most recent shared year, 2025: Isaac #104, Logan #121.
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 | Isaac | Logan |
|---|---|---|
| Record type | Editorially researched profile | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Traditionally understood as 'he will laugh' or 'he laughs', tied to the biblical narrative in which Abraham and Sarah laugh at the prophecy of Isaac's birth in their old age. | Derived from a Scottish place name in Ayrshire, traditionally interpreted as 'little hollow', from Gaelic lag ('hollow, pit') plus a diminutive suffix — became a Scottish surname before being adopted as a given name. |
| Origin | Biblical Hebrew, transmitted into English via Greek Isaak and Late Latin Isaac | Scottish Gaelic, place-name-turned-surname-turned-given-name |
| Pronunciation | /ˈaɪzək/ | /ˈloʊɡən/ |
| Syllables | 2 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ |
| Most recent popularity observation | New South Wales, Australia · Boys #26 (2025) | Republic of Ireland · Boys #121 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | 90/100 |
| Spelling simplicity (demonstration score) | 94/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Isaac is recorded with a Biblical Hebrew, transmitted into English via Greek Isaak and Late Latin Isaac origin, while Logan is recorded with a Scottish Gaelic, place-name-turned-surname-turned-given-name origin.
- Isaac and Logan both have 2 syllables.
- Isaac's recorded meaning differs from Logan's — see the table above for each.
- Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ.
How each name got here
Isaac
Popularity journey
First recorded1964
First recorded at #232 among boys in Republic of Ireland in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1990–2025
Highest recorded position: #8 among boys in New South Wales, Australia, in 2015 (recorded 1990–2025).
New South Wales, Australia · Boys
Most recent2025
Most recently recorded at #26 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys
Logan
Popularity journey
First recorded1979
First recorded at #65 among boys in New Zealand in 1979 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New Zealand · Boys
Highest recorded1997–2024
Highest recorded position: #10 among boys in Northern Ireland, in 2017 (recorded 1997–2024).
Northern Ireland · Boys
Most recent2025
Most recently recorded at #121 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys