Lock
SALock is a stable suburb in SA with 253 residents.
- SAL code
- 40774
- SA2
- 406011132
- Population
- 253
- LGA
- Elliston
Lock, SA had 253 residents at the 2021 Census, with the broader statistical area roughly steady over the last five years. The predominant age group is 55-64 years, and the median age sits at 38. Households are most often couples without children, and those with a mortgage repay a median of $512 a month. Around 67.1% of homes are owner-occupied, with the largest single tenure being owned outright at 46.6%. Most dwellings are separate houses, making up 100.0% of the suburb's housing stock. The suburb has 5 parks and reserves mapped within its boundary. Source: ABS Census 2021 and Estimated Resident Population, with amenity counts from state Open Data and OpenStreetMap.
Population
?253
Suburb · Census 2021
5-Year Growth
+0.2%
3yr: +1.5% · 10yr: -4.8%
SA2 · 5yr
Household Income
$1,125/wk
Suburb · Census 2021 median
Median Age
38
Suburb · Census 2021
Socio-Economic Index
?4/10
SA2 · middle-range
Unemployment
?4.1%
SA2 · Q4 2025
Schools
2
1 primary
Hospitals
No data for this suburb
Childcare services
?1
in suburb
Parks & green space
?5
Parks, reserves
Transport stops
No data for this suburb
Dwelling approvals
?1
Elliston · Feb 2026
Median Weekly Rent
Based on rental bond lodgements recorded by the state government.
Median House Sale Price
No data for this suburb
VGV suppresses suburbs with too few sales per quarter
Safety & Crime
2025 Q4Reported incidents from SA police. Offence rates may not reflect all crime.
Population over time — Le Hunte - Elliston (SA2)
ABS publishes annual estimates only at SA2; Lock suburb alone is ~253 (Census 2021).
Source: ABS ERP (latest release · 2025) · Census 2021. Numbers refreshed quarterly.
Growth at a Glance
Population grew from 2,537 to 2,207 over 24 years, averaging -0.6% per year.
Schools
2 in suburbSector
2 public
Type
1 primary
Total enrolment
43(1 of 2 reporting)
Avg per school
43
Government school catchment
Catchment data is not yet available for SA.
Source when available: SA Department for Education — School Zones (primary + high).
Profile
Census snapshot
Housing
Almost entirely detached houses (100%), mixed tenure (67.1% own or mortgage), built for families (57% are 3 bed).
Dwelling mix
Tenure
SA 28%
Number of bedrooms
Bushfire risk
This suburb falls outside every bushfire polygon mapped by the relevant authority. Always confirm at the property address — local conditions and unmapped overlays can still apply.
Overlap is the percentage of the suburb's land area inside the mapped bushfire polygons. Always verify the exact property address with the relevant authority before making decisions. Source when available: SA DHUD Bushfire Hazards Overlay and DEW Flood Mapping.
Flood risk
This suburb falls outside every flood polygon mapped by the relevant authority. Always confirm at the property address — local conditions and unmapped overlays can still apply.
Overlap is the percentage of the suburb's land area inside the mapped flood polygons. Always verify the exact property address with the relevant authority before making decisions. Source when available: SA DHUD Bushfire Hazards Overlay and DEW Flood Mapping.
Planning zones
Planning-zone data is not yet available for SA.
Source when available: SA Department for Housing and Urban Development — Planning and Design Code.