3235.0 - Regional Population by Age and Sex, Australia, 2018 Quality Declaration 
Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 29/08/2019   
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Northern Territory

Median age

At June 2018, the Northern Territory (NT) had a median age (the age at which half the population is older and half is younger) of 32.9 years, which was the lowest of all states and territories.

In the five years to June 2018, the median age of the population in Greater Darwin increased from 32.8 to 33.9 years. Over the same period, the median age in the rest of the NT increased from 29.9 to 31.2 years.

The Statistical Areas Level 2 (SA2s) with the highest median ages in 2018 were:

  • Ross (45.7 years) which is a suburb of Alice Springs
  • Alligator (43.1) in the Top End
  • Virginia (40.4) in the Litchfield region

The areas with the lowest median ages were:
  • Gulf (25.9 years) and Victoria River (26.1), both in the Katherine region
  • East Arnhem (26.4) in the territory's north-east

SA2s WITH OLDEST AND YOUNGEST MEDIAN AGES(a), Northern Territory, 2018

Median Age
SA2SA3
years

OLDEST MEDIAN AGES

RossAlice Springs
45.7
AlligatorDaly - Tiwi - West Arnhem
43.1
VirginiaLitchfield
40.4
Fannie Bay - The GardensDarwin City
39.5
JingiliDarwin Suburbs
38.8

YOUNGEST MEDIAN AGES

GulfKatherine
25.9
Victoria RiverKatherine
26.1
East ArnhemEast Arnhem
26.4
ThamarrurrDaly - Tiwi - West Arnhem
26.5
BarklyBarkly
26.5

(a) Excludes SA2s with less than 1,000 people.


Sex ratio

At June 2018, the NT had the highest sex ratio of all states and territories, with 107.7 males per 100 females. Males outnumbered females in both Greater Darwin (110.9 males per 100 females) and the rest of the NT (103.0).

The SA2s with the highest sex ratios in the NT included:
  • Howard Springs (306.3 males per 100 females) and Larrakeyah (124.6), both with large numbers of defence force personnel
  • Weddell (127.7) in Litchfield

The areas with the lowest sex ratios were:
  • Tanami (87.7 males per 100 females) and Yuendumu - Anmatjere (93.2), both in central Australia
  • Mount Johns (91.3), Flynn (93.3) and East Side (94.0) which are all suburbs of Alice Springs

SA2s WITH HIGHEST AND LOWEST SEX RATIOS(a), Northern Territory, 2018

Sex Ratio
SA2SA3
males per 100 females

HIGHEST SEX RATIOS

Howard SpringsLitchfield
306.3
WeddellLitchfield
127.7
LarrakeyahDarwin City
124.6
Sandover - PlentyAlice Springs
123.5
Darwin CityDarwin City
122.8

LOWEST SEX RATIOS

TanamiAlice Springs
87.7
Mount JohnsAlice Springs
91.3
Yuendumu - AnmatjereAlice Springs
93.2
FlynnAlice Springs
93.3
East SideAlice Springs
94.0

(a) Excludes SA2s with less than 1,000 people.


Age and sex distribution

At June 2018 Greater Darwin had a lower proportion of its population under 25 years of age (32%) compared with the rest of the NT (38%), and a higher proportion of people aged 25 years and above (68% compared with 62% in the rest of the NT).


AGE AND SEX DISTRIBUTION (%), Northern Territory - 30 June 2018

Population pyramid showing proportion of population by age and sex in Greater Darwin and rest of Northern Territory, 30 June 2018