ABS 2021 Census · Updated 31 March 2026
Costello is a regional centre in Northern Territory, Australia, with a population of approximately 23, making it a boutique locality. Located approximately 1140 km from the Darwin CBD, Costello is a regional area in Northern Territory. The median household income is $142,948 AUD per year (ABS 2021 Census).
Above-average earnings in Costello support sustained property values. Distance from major centres is a consideration, though regional markets can offer higher rental yields.
Map shows Costello, Northern Territory, Australia.
Official Australia Post postcode for Costello. A postcode may cover multiple suburbs.
Australia Post Postcode Finder →Usual resident population at census night. Source: ABS 2021 Census of Population and Housing.
ABS Census Data →Weekly median rent for occupied private dwellings. Source: ABS 2021 Census. Live rental data integration coming soon.
State Rental Authority →Annual median household income (before tax) for all households. Source: ABS 2021 Census.
ABS Census Data →Straight-line distance from the suburb centroid (ABS 2021 SAL geography) to the nearest capital city CBD. Actual driving distance will be longer.
Estimated 1 school within or near this suburb based on ABS 2021 data.
Find schools near Costello on My School →Estimated 1 park and green spaces near this suburb. Source: ABS 2021 data.
Monthly median mortgage repayment for households currently paying off a mortgage. Source: ABS 2021 Census.
ABS Census Data →Proportion of separate houses vs units, townhouses, and other dwelling types. Source: ABS 2021 Census. Relevant for investors assessing rental demand mix.
ABS Census Data →As a regional centre, Costello serves a wide catchment area. Regional property can offer higher rental yields than metro equivalents, though investors should assess local employment diversity and infrastructure plans. A median household income of $142,948/year supports premium property values and indicates a well-employed resident base.
Costello offers moderate buy-and-hold potential — look for properties with value-add opportunities.
Achieving strong cash flow in Costello is challenging at current rent-to-price ratios.
The resale market in Costello may not support quick-turnaround renovation projects.
Run the numbers on a Costello property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Costello faces a cautious growth outlook for 2026 — investors should focus on yield rather than short-term gains. The rental pipeline in Costello is thinner — flexible lease terms could help secure tenants faster. Costello offers measured appeal for investors willing to look beyond headline metrics.
Costello is a regional area in Northern Territory with a population of 23. the median household income is $142,948/year (ABS 2021 Census). As with any property investment, conduct thorough due diligence on current listings, vacancy rates, and local infrastructure plans before committing.
Key demand drivers in Costello include regional employment hubs, lifestyle, and affordability. The area has approximately 1 schools and 1 parks nearby.
According to the ABS 2021 Census, Costello has a population of approximately 23. For historical population trends and intercensal estimates, visit the ABS Census Data Explorer at abs.gov.au.
Costello is approximately 1140 km straight-line distance from the Darwin CBD (calculated from ABS 2021 suburb centroid coordinates). As a regional or remote location, travel to the capital is significant — local amenities and employment are important investment considerations.