Population
+91.7% since 2016.
Costello, NT
Costello had a population of 23 at the 2021 Census (+91.7% since 2016). Median age 20.9. Source: ABS Census 2021, via Censible. Census 2026 data arrives June 2027.
Costello at a glance
What the 2021 Census says, compared with Northern Territory.
Between the 2016 and 2021 censuses, Costello's population grew by 91.7% to 23, faster than Northern Territory as a whole (+1.7%). With a median age of 20.9, it is younger than the NT average (33.2). Children under 10 make up 26.1% of residents, and people aged 70 and over 0.0%.
0.0% of residents were born overseas, fewer than the NT average of 23.9%. 0.0% use a language other than English at home. 69.6% report no religion, higher than the NT average (43.9%).
Key figures
2021 Census, Costello beside NT and Australia.
| Measure | Costello | NT | Australia |
|---|---|---|---|
| Population | 23 | 232,621 | 25,422,828 |
| Growth since 2016 | +91.7% | +1.7% | +8.6% |
| Median age | 20.9 | 33.2 | 38.2 |
| Households | – | 70,646 | 9,275,123 |
| Flats and apartments | – | 18.1% | 14.3% |
| Renting | – | 48.6% | 31.1% |
| Owned outright | – | 16.2% | 31.4% |
| Median household income a week | – | $2,058 | $1,747 |
| Median rent a week | – | $326 | $376 |
| Median mortgage repayment a month | – | $2,001 | $1,866 |
| Born overseas | 0.0% | 23.9% | 29.3% |
| Other language at home | 0.0% | 36.1% | 23.6% |
| No religion | 69.6% | 43.9% | 41.9% |
Source: ABS Census 2021, via Censible. How the figures are built
Population and age
Each census since 2011, and the age profile in 2021.
Age
Median age 20.9, against 33.2 for Northern Territory.
Source: ABS Census 2021, via Censible. How the figures are built
Cultural background
The largest groups in Costello at the 2021 Census.
Ancestry
Languages at home
Country of birth
Source: ABS Census 2021, via Censible. How the figures are built
Around Costello
The places it belongs to, sits beside and contains.
Part of
Nearby
Explore Costello in Censible
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