Declan vs Liam
Declan and Liamcompared 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 Zealand · Boys
In 2013, Declan was ranked #84 and Liam #6 among boys in New Zealand.
Republic of Ireland · Boys
In 2025, Declan was ranked #348 and Liam #7 among boys in Republic of Ireland.
New South Wales, Australia · Boys
In 2010, Declan was ranked #81 and Liam #14 among boys in New South Wales, Australia.
Northern Ireland · Boys
In 2024, Declan was ranked #256 and Liam #42 among boys in Northern Ireland.
Scotland · Boys
In 2024, Declan was ranked #404 and Liam #47 among boys in Scotland.
England and Wales · Boys
In 2024, Declan was ranked #371 and Liam #70 among boys in England and Wales.
Declan and Liam over time
Declan and Liam appear together in 3 published lists, across 119 years of shared records. Liam held the stronger position in more years in 3 of them, Declan 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.
Declan reached its own highest recorded position earlier in 2 of those lists, Liam in 1. 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.
- One moved ahead of the other
In 1990, Liam moved ahead of Declan in Republic of Ireland · Boys — #45 and #46 the year before became #49 and #47.
- Longest-running competitions
Declan and Liam were both ranked in Republic of Ireland · Boys for 62 years, from 1964 to 2025, ending at #348 and #7.
- Started together, ended far apart
In 1997 they stood at #54 and #48 in Northern Ireland · Boys, 6 places apart; by 2024 they were #256 and #42.
List by list
Republic of Ireland · Boys62 shared years, 1964–2025
Declan held the stronger position in 26 of those years, Liam in 36.
Highest recorded here: Declan #12 in 1971, Liam #6 in 2021.
The order changed in 1990: Liam moved ahead. In 1989 they stood at #45 and #46; by 1990 that had become #49 and #47.
Most recent shared year, 2025: Declan #348, Liam #7.
England and Wales · Boys29 shared years, 1996–2024
Declan held the stronger position in 0 of those years, Liam in 29.
Highest recorded here: Declan #66 in 2000, Liam #10 in 1996.
The order between them never changed and held in this list.
Most recent shared year, 2024: Declan #371, Liam #70.
Northern Ireland · Boys28 shared years, 1997–2024
Declan held the stronger position in 1 of those years, Liam in 27.
Highest recorded here: Declan #54 in 1997, Liam #35 in 2008.
The order between them never changed and held in this list.
Most recent shared year, 2024: Declan #256, Liam #42.
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 | Declan | Liam |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Not yet recorded | A short form, inheriting its meaning from William — 'resolute protection' or 'will helmet'. |
| Origin | Not yet recorded | Irish, short form of William (via Uilliam) |
| Pronunciation | Not yet recorded | /ˈliːəm/ |
| Syllables | 2 | 1 |
| 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, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | Republic of Ireland · Boys #348 (2025) | Norway · Boys #7 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 88/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Liam has a recorded origin (Irish, short form of William (via Uilliam)); Declan does not have one recorded yet.
- Declan has 2 syllables, compared with 1 for Liam.
- A meaning is recorded for Liam; Declan doesn't have one written yet.
- Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ.
How each name got here
Declan
Popularity journey
First recorded1964
First recorded at #23 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 recorded1964–2025
Highest recorded position: #12 among boys in Republic of Ireland, in 1971 (recorded 1964–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #348 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys
Liam
Popularity journey
First recorded1964
First recorded at #54 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 recorded1986–2023
Highest recorded position: #1 among boys in New Zealand, in 2010 (recorded 1986–2023).
New Zealand · Boys
Most recent2025
Most recently recorded at #15 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys