North Plympton, SA

By Lauren McCaleb · Reviewed by Dylan Duncan · Updated 30 May 2026

62/100

Suburb Score

More advantaged than the national average

North Plympton is more socio-economically advantaged than about 62% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1007, where about 1000 is the national average).

A socio-economic measure from ABS Census data — not a measure of how good a suburb is to live in or visit. How we calculate this.

North Plympton at a glance

Population (2021): 3,610
Median age: 40
Median weekly household income: $1,650
SEIFA score: 1007
Coordinates: -34.9547, 138.5530

North Plympton demographics (2021 Census)

The figures below profile North Plympton using the Australian Bureau of Statistics 2021 Census; every percentage is a share of a clearly stated Census count, so each one traces back to the source. At a glance, the largest age group is young adults (25–44) at 30%, 30% of homes are rented, and 33% of residents were born overseas.

Age profile

Age group	People	Share
Children (0–14)	497	14%
Youth (15–24)	426	12%
Young adults (25–44)	1,067	30%
Mid-life (45–64)	691	19%
Seniors (65+)	927	26%

Share of the 3,608 people counted by age.

Housing and households

Tenure	Dwellings	Share
Owned outright	391	28%
Owned with a mortgage	485	35%
Rented	419	30%

Dwelling type	Dwellings	Share
Houses	971	70%
Townhouses & semis	384	28%
Flats & apartments	34	2%

Tenure and dwelling shares are of the roughly 1,389 occupied private dwellings in North Plympton.

Median weekly rent: $360
Median monthly mortgage: $1,777
Average household size: 2.3 people
Median weekly family income: $2,142
Median weekly personal income: $777

Community and culture

Born overseas: 1,160 (33%)
Speaks a language other than English at home: 1,049 (30%)
Aboriginal and/or Torres Strait Islander: 50 (1%)

Work and education

Completed Year 12: 1,917 (63%)
Labour-force participation: 59.6%
Unemployment rate: 5.2%
Employed full-time: 1,061
Employed part-time: 612

Source: ABS Census of Population and Housing, 2021 (General Community Profile, by Suburb and Locality). © Australian Bureau of Statistics, released under CC BY 4.0. How we group bands and derive each share is set out on our methodology page.

Weather and climate in North Plympton

Based on 2014–2023 records, the warmest month in North Plympton is January (average daytime high around 27.9°C) and the coolest is July (around 14°C). The area receives roughly 711 mm of rain across the year.

Month	Avg high	Avg low	Rain
Jan	27.9°C	17.5°C	29 mm
Feb	26.5°C	17°C	29 mm
Mar	24.7°C	16°C	20 mm
Apr	21.4°C	14°C	51 mm
May	17.3°C	11.7°C	86 mm
Jun	14.8°C	9.6°C	100 mm
Jul	14°C	8.9°C	104 mm
Aug	14.7°C	8.8°C	95 mm
Sep	17.2°C	10.2°C	62 mm
Oct	20.5°C	11.9°C	52 mm
Nov	22.7°C	13.6°C	52 mm
Dec	25.6°C	15.6°C	31 mm

Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).

Common questions about North Plympton

Where is North Plympton?

North Plympton is a suburb of South Australia, Australia.

What is the population of North Plympton?

At the 2021 Census, North Plympton had a population of about 3,610.

Is North Plympton an advantaged area?

North Plympton has an ABS SEIFA score of 1007, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 62 out of 100 — more socio-economically advantaged than about 62% of Australian suburbs.

What is the weather like in North Plympton?

North Plympton has average daytime highs of about 20.6°C and overnight lows of about 12.9°C, with roughly 711 mm of rain across the year (based on 2014–2023 climate normals).