Costello
NTCostello is a stable suburb in NT with 23 residents.
- SAL code
- 70066
- SA2
- 702021055
- Population
- 23
- LGA
- Barkly
Costello, NT had 23 residents at the 2021 Census, with the broader statistical area showing a 1.1% growth over the last five years. The predominant age group is 20-24 years, and the median age sits at 20. The median household income is $2,749 per week, and households with a mortgage repay around $0 a month. Most workers travel by walked, accounting for 88.2% of the journey-to-work mix. Source: ABS Census 2021 and Estimated Resident Population, with amenity counts from state Open Data and OpenStreetMap.
Population
?23
Suburb · Census 2021
5-Year Growth
+1.1%
3yr: +2.6% · 10yr: -11.5%
SA2 · 5yr
Household Income
$2,749/wk
Suburb · Census 2021 median
Median Age
20
Suburb · Census 2021
Socio-Economic Index
?1/10
SA2 · more disadvantaged
Unemployment
?11.3%
SA4 · Q4 2025
Hospitals
No data for this suburb
Childcare services
No data for this suburb
Parks & green space
OpenStreetMap parks data not yet loaded for NT
Transport stops
public-transport (GTFS) data not yet loaded for NT
Dwelling approvals
?5
Barkly · Feb 2026
Median Weekly Rent
state rental-bond data not yet loaded for NT
Median House Sale Price
state Valuer-General sale price data not yet loaded for NT
Safety & Crime
2026 Q2Reported incidents from NT police. Offence rates may not reflect all crime.
Population over time — Barkly (SA2)
ABS publishes annual estimates only at SA2; Costello suburb alone is ~23 (Census 2021).
Growth at a Glance
Population grew from 2,955 to 2,596 over 24 years, averaging -0.5% per year.
Schools
school-locations register not yet loaded for NT
Government school catchment
Catchment data is not yet available for NT.
Source when available: NT Department of Education / NR Maps.
Profile
Census snapshot
People
Median age 20 (young), largest age group 20-24 (30.434782608695656%), full-time-heavy workforce (106%).
Median age
20
Avg household size
2
Age distribution
Employment
100.0% workforce participation · 0.0% unemployment
Bushfire & flood risk
Bushfire
Source: NT Bushfires NT Wildfire-Mitigation Areas
As of May 2026
Flood
Hazard data is not yet available for this state.
Overlap is the percentage of the suburb's land area inside the mapped hazard polygons. Always verify the exact property address with the relevant authority before making decisions.
Planning zones
Planning-zone data is not yet available for NT.
Source when available: NT Department of Infrastructure, Planning and Logistics — NT Planning Scheme 2020.