Kellyville, NSW
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Kellyville lies in Sydney's Hills District, about 36 kilometres north-west of the city centre in The Hills Shire. The land is the traditional country of the Bidjigal people, a clan of the Dharug. The suburb is believed to take its name from Hugh Kelly, an early publican whose Bird-In-Hand inn stood on Windsor Road, and the surrounding area was once nicknamed Irish Town for the Kelly clan who farmed there. After Kelly died in 1884, his holdings and neighbouring grants were subdivided into farmlets as the Kellyville Estate, fixing the present route of Windsor Road. Kellyville Public School dates to 1873 and the local post office opened in 1889. Semi-rural for much of the twentieth century, Kellyville became one of the fastest-growing parts of The Hills, and the Sydney Metro North West rail line reached the suburb in 2019.
Among Australia's more advantaged suburbs
Kellyville is more socio-economically advantaged than about 99% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1147, where about 1000 is the national average).
A socio-economic measure from ABS Census data — not a measure of how good a suburb is to live in or visit. How we calculate this.
Kellyville at a glance
- Population (2021)
- 27,011
- Median age
- 38
- Median weekly household income
- $3,044
- SEIFA score
- 1147
- Coordinates
- -33.7104, 150.9580
Kellyville demographics (2021 Census)
The figures below profile Kellyville using the Australian Bureau of Statistics 2021 Census; every percentage is a share of a clearly stated Census count, so each one traces back to the source. At a glance, the largest age group is young adults (25–44) at 26%, 19% of homes are rented, and 43% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 5,839 | 22% |
| Youth (15–24) | 3,808 | 14% |
| Young adults (25–44) | 7,112 | 26% |
| Mid-life (45–64) | 6,895 | 26% |
| Seniors (65+) | 3,360 | 12% |
Share of the 27,014 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 2,046 | 25% |
| Owned with a mortgage | 4,225 | 52% |
| Rented | 1,551 | 19% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 7,104 | 88% |
| Townhouses & semis | 550 | 7% |
| Flats & apartments | 420 | 5% |
Tenure and dwelling shares are of the roughly 8,103 occupied private dwellings in Kellyville.
- Median weekly rent
- $630
- Median monthly mortgage
- $3,000
- Average household size
- 3.3 people
- Median weekly family income
- $3,122
- Median weekly personal income
- $1,049
Community and culture
- Born overseas
- 11,468 (43%)
- Speaks a language other than English at home
- 11,074 (42%)
- Aboriginal and/or Torres Strait Islander
- 127 (0%)
Work and education
- Completed Year 12
- 15,287 (77%)
- Labour-force participation
- 68.5%
- Unemployment rate
- 4.1%
- Employed full-time
- 8,756
- Employed part-time
- 3,794
Source: ABS Census of Population and Housing, 2021 (General Community Profile, by Suburb and Locality). © Australian Bureau of Statistics, released under CC BY 4.0. How we group bands and derive each share is set out on our methodology page.
Weather and climate in Kellyville
Based on 2014–2023 records, the warmest month in Kellyville is January (average daytime high around 28.4°C) and the coolest is July (around 16.8°C). The area receives roughly 854 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 28.4°C | 18.6°C | 85 mm |
| Feb | 27.1°C | 18.1°C | 92 mm |
| Mar | 25.4°C | 16.9°C | 139 mm |
| Apr | 22.9°C | 13.6°C | 72 mm |
| May | 19.7°C | 10°C | 37 mm |
| Jun | 16.7°C | 8°C | 57 mm |
| Jul | 16.8°C | 7.1°C | 56 mm |
| Aug | 17.9°C | 7.6°C | 52 mm |
| Sep | 20.9°C | 9.8°C | 44 mm |
| Oct | 23.7°C | 12.6°C | 77 mm |
| Nov | 25.2°C | 14.7°C | 73 mm |
| Dec | 27.5°C | 16.9°C | 70 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about Kellyville
Where is Kellyville?
Kellyville is a suburb of New South Wales, Australia.
What is the population of Kellyville?
At the 2021 Census, Kellyville had a population of about 27,011.
Is Kellyville an advantaged area?
Kellyville has an ABS SEIFA score of 1147, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 99 out of 100 — more socio-economically advantaged than about 99% of Australian suburbs.
What is the weather like in Kellyville?
Kellyville has average daytime highs of about 22.7°C and overnight lows of about 12.8°C, with roughly 854 mm of rain across the year (based on 2014–2023 climate normals).
How big is Kellyville?
Kellyville is one of the most populous suburbs in New South Wales — the 21st-largest by usual resident population at the 2021 Census (about 27,011 usual residents).
Where Kellyville ranks
Kellyville appears in these data-driven guides — each a transparent sort on a single ABS figure shown on this page.
- Largest suburbs in New South Wales#21 of 25
Nearby suburbs in New South Wales
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