St Clair at a glance
Walk score
0
Very car dependent
Population
21.4k
Median age 37
The brief
What to know about St Clair.
The postcode for St Clair is 2330 (NSW).
St Clair (2330) sits in the Hawkesbury region of NSW.
St Clair has roughly 21,445 residents, with a typical family-age mix. Households are dominated by renters. Daily life is car-dependent: most residents drive to work, school and the shops.
Side by side
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Day to day
What it’s like to live here.
St Clair scores 0/100 on walkability, which makes it car-dependent with limited public transport. Plan for two cars in a typical household, especially if work isn't local.
Summer days here average around 25°C (mild), winter mornings around 8°C (mild). Annual rainfall lands at about 1143mm. Data comes from the Bureau of Meteorology's Newcastle Nobbys Signal station, 25.0km away.
Schooling within or near the suburb covers 12 government primary, 2 government secondary, 3 Catholic, 3 independent.
Who lives here
Demographics.
The 2021 Census put St Clair's population at 21,445, with a median age of 37. That sits as a typical family-age mix.
Population
21,445
Median age
37
Family households
–
Lone person
–
Market
The price of a home here.
Median house price
Verified median pending
We don't yet have a verified suburb-level median for this market. We're working on a data partner; in the meantime, treat the state-level figures as a guide only. How we source data.
Rental and ownership
Weekly rent (house)
$335/wk
Weekly rent (unit)
$285/wk
Owner occupied
–
Renter occupied
–
At a deeper level
21,445
Median age: 37
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Getting around
Walkability.
0
0
0
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Education
Schools in St Clair.
Local schools for St Clair
View the catchment for each school to find out more.
Government School Catchment
Mount Pleasant Public School
Singleton Heights Public School
Singleton Public School
© ACARA, licensed under CC BY 4.0.
Climate
Weather year-round.
Annual Rainfall
1143 mm
Hottest Month (avg max)
24.7°C
Coldest Month (avg min)
8.2°C
Monthly Rainfall (mm)
Weather data from BOM station Newcastle Nobbys Signal (25 km away)
Climate data as of May 2026· Bureau of Meteorology
Frequently asked
About St Clair.
- What is the St Clair postcode?
- St Clair is in the 2330 postcode, in NSW, in the Hawkesbury City Council region.
- Where is St Clair?
- St Clair is a regional suburb in NSW, postcode 2330, in the Hawkesbury City Council region.
- What is the average rent in St Clair?
- The median weekly rent for houses is $335, for units it's $285.
- What schools are in St Clair?
- There are 20 schools serving St Clair on this page, including Mount Pleasant Public School, Singleton Heights Public School, St Catherine's Catholic College.
- How walkable is St Clair?
- St Clair has a Walk Score of 0 out of 100, highly car-dependent. transit score 0, bike score 0.
- What suburbs are near St Clair?
- St Clair is close to Mount Olive, Greenlands, Goorangoola, Carrowbrook, Bridgman.
- What is the population of St Clair?
- The population of St Clair is approximately 21,445 (2021 Census). The median age is 37.
For Sale
St Clair
Buying
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Surrounding Suburbs
Side by side
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Sources cited
Median, growth and rental data from state revenue offices and ABS. Census from ABS 2021. Climate from BoM. Hazard from Geoscience Australia. School data from ACARA. Crime from state police open data. Full methodology →
Always dated
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