William Bay
WAWilliam Bay is a growing suburb in WA with 164 residents.
- SAL code
- 51613
- SA2
- 509011228
- Population
- 164
- LGA
- Denmark
William Bay, WA had 164 residents at the 2021 Census, with the broader statistical area showing a 7.2% growth over the last five years. The predominant age group is 55-64 years, and the median age sits at 51. Households are most often couples with children, and those with a mortgage repay a median of $2,192 a month. Around 86.4% of homes are owner-occupied, with the largest single tenure being owned outright at 59.1%. Most dwellings are separate houses, making up 100.0% of the suburb's housing stock. The suburb has 1 park or reserve mapped within its boundary. Source: ABS Census 2021 and Estimated Resident Population, with amenity counts from state Open Data and OpenStreetMap.
Population
?164
Suburb · Census 2021
5-Year Growth
+7.2%
3yr: +4.8% · 10yr: +15.1%
SA2 · 5yr
Household Income
$1,104/wk
Suburb · Census 2021 median
Median Age
51
Suburb · Census 2021
Socio-Economic Index
?5/10
SA2 · middle-range
Unemployment
?1.9%
SA4 · Q4 2025
Hospitals
No data for this suburb
Childcare services
No data for this suburb
Parks & green space
?1
Parks, reserves
Transport stops
?1
GTFS stops
Dwelling approvals
?4
Denmark · Feb 2026
Median Weekly Rent
state rental-bond data not yet loaded for WA
Median House Sale Price
state Valuer-General sale price data not yet loaded for WA
Safety & Crime
2025 Q4Reported incidents from WA police. Offence rates may not reflect all crime.
Population over time — Denmark (SA2)
ABS publishes annual estimates only at SA2; William Bay suburb alone is ~164 (Census 2021).
Growth at a Glance
Population grew from 4,734 to 6,858 over 24 years, averaging 1.6% per year.
Government school catchment
Catchment data is not yet available for WA.
Source when available: WA Department of Education — Public School Local-Intake Areas.
Profile
Census snapshot
Housing
Almost entirely detached houses (100%), owner-occupied (86%), built for families (48% are 3 bed).
Dwelling mix
Tenure
Number of bedrooms
Bushfire & flood risk
Hazard data is not yet available for WA.
Source when available: WA DFES Bush Fire Prone Areas and DWER Floodplain Mapping.
Planning zones
Planning-zone data is not yet available for WA.
Source when available: Landgate / WA Department of Planning, Lands and Heritage.