Federal electorate · New South Wales
Mackellar
Mackellar is a federal electorate in New South Wales, held by independent Sophie Scamps since the 2025 election, by a margin of 5.66 points — a marginal seat.
Member for Mackellar
Sophie Scamps
Independent
The 2025 result
Final two candidates after preferences were distributed, from the election held 3 May 2025.
- Sophie SCAMPSIndependent55.66%62,255 votes
- James BROWNLiberal44.34%49,592 votes
First preferences in 2025
How the seat voted before preferences were distributed. The Coalition is counted as one figure across its four registrations, and the Greens across both of theirs — in Victoria they contest as GVIC and elsewhere as GRN, which read as two separate minor parties if left unmerged.
- Independents40.7%
- Coalition35.4%
- Labor12.1%
- Greens6.1%
- Minor parties3.2%
- One Nation2.5%
Suburbs in Mackellar
39 suburbs and localities have residents in this electorate. 3of them also have residents in another one — the percentage is the share of that area’s Census population living here.
- Dee Why
- Frenchs Forest 100%
- Mona Vale
- Avalon Beach
- Newport (NSW)
- Belrose
- Forestville (NSW)
- Warriewood
- Narrabeen
- Cromer (NSW)
- Collaroy (NSW)
- Narraweena 89%
- North Narrabeen
- Collaroy Plateau
- Elanora Heights
- Killarney Heights
- North Curl Curl
- Beacon Hill 54%
- Bayview (NSW)
- Bilgola Plateau
- Wheeler Heights
- Terrey Hills
- Davidson
- Palm Beach (NSW)
- Church Point
- Ingleside
- Clareville
- Scotland Island
- Duffys Forest
- Whale Beach
- Oxford Falls
- Bilgola Beach
- Lovett Bay
- Cottage Point
- Elvina Bay
- Great Mackerel Beach
- Coasters Retreat
- Morning Bay
- Ku-ring-gai Chase
Postcodes in Mackellar
15 postcodes have residents in this electorate. 3of them also have residents in another one — the percentage is the share of that area’s Census population living here.
- 2099 98%
- 2101
- 2097
- 2107
- 2086 100%
- 2087
- 2085
- 2103
- 2106
- 2102
- 2100 19%
- 2104
- 2084
- 2105
- 2108
Where this comes from
- Results, margins and turnout are the AEC’s published 2025figures. The margin is derived — the winner’s two-candidate-preferred share minus 50 — and the seat status is the AEC’s own classification.
- Suburbs and postcodes come from 2021 Census mesh blocks matched to CED_2025 boundaries, weighted by resident population rather than by area — otherwise a large, largely uninhabited postcode is assigned to whichever division holds the most empty land.
- These are an approximation of the AEC’s legal boundaries, so close to a boundary they can differ. To confirm where you are enrolled, check the AEC.
Australian Statistical Geography Standard Edition 3 allocation files and 2021 Census Mesh Block Counts, © Australian Bureau of Statistics.