Kalgoorlie-Boulder

Western Australia · Western Australia - Outback (South) · 29,297 people · 32 suburbs · 4 postcodes

Kalgoorlie-Boulder at a glance

29,297
Population
#27 of 123 in WA
95,500
km² area
0/km² density
34.1
Median age
-5.0 vs WA
$2,376
Median HH income/wk
#10 of 123 in WA
980
SEIFA IRSAD
#49 of 123 in WA
17
Schools
12 gov, 3 Cath, 2 indep
23.9%
Born overseas
38.2%
Renting

Map shows the Kalgoorlie-Boulder LGA boundary in blue with a marker per suburb. Hover for suburb name, click for details.

Marker colour reflects SEIFA IRSAD decile: ● 1-2 (most disadvantaged), ● 3-4, ● 5-6, ● 7-8, ● 9-10 (most advantaged).

Boundary source: ABS ASGS 2021. Map tiles: OpenStreetMap contributors.

Kalgoorlie-Boulder is a Local Government Area in Western Australia, in the Perth region. It covers 32 suburbs across 4 postcodes and an area of 95,500 km². Kalgoorlie-Boulder has a population of 29,297 , ranking #27 most populous in WA. The most populous suburb is Boulder (4,872 residents), and the highest median household income is in Ora Banda at $4,499/week. The LGA-wide median household income is $2,376/week and median age is 34.1. About 23.9% of residents were born overseas and 12.8% speak a language other than English at home.

Who lives here

Age structure

0–14 (22.1%) 15–24 (12.3%) 25–44 (31.5%) 45–64 (25.1%) 65+ (9.1%)
Show counts
0–14 years6,472 (22.1%)
15–24 years3,586 (12.3%)
25–44 years9,207 (31.5%)
45–64 years7,337 (25.1%)
65+ years2,648 (9.1%)
23.9%
Born overseas
12.8%
Speak a language other than English at home
7.6%
First Nations
2.6
Avg household size

How they live

Housing tenure

Owned outright (18.9%) Mortgaged (42.9%) Renting (38.2%)

Dwelling type mix

Separate house (87.3%) Semi/townhouse (11.9%) Flat/apartment (0.8%)
$311
Median weekly rent
$1,602
Median monthly mortgage
36.1%
Households with 0-1 cars
63.9%
Households with 2+ cars

Work and learning

3.5%
Unemployment rate
10,996
In full-time work
3,339
In part-time work

Schools in Kalgoorlie-Boulder

17 schools across Kalgoorlie-Boulder: 70.6% Government, 17.6% Catholic, 11.8% Independent. The WA average is 71.4% / 14.1% / 14.5%. Schools here have a median ICSEA of 954 (range 648 to 1030). WA median is 1006; national mean is 1000.

Sector mix

WA average for comparison
Government Catholic Independent

Type breakdown

Primary (64.7%) Secondary (17.6%) Combined (5.9%) Special (11.8%)

ICSEA range

700 National mean 1000 1300
LGA median 954 WA median 1006LGA range 648 to 1030

ICSEA (Index of Community Socio-Educational Advantage) summarises the socio-economic background of each school's families. Higher values indicate more advantage. Source: ACARA 2025.

All 17 schools in Kalgoorlie-Boulder, sorted by enrolment:

School Sector Type Suburb Students ICSEA
Kalgoorlie-Boulder Community High School Government Secondary Kalgoorlie 854 890
O'Connor Primary School Government Primary Kalgoorlie 761 922
John Paul College Catholic Secondary Kalgoorlie 699 1010
Kalgoorlie Primary School Government Primary Kalgoorlie 496 980
Eastern Goldfields College Government Secondary Kalgoorlie 485 954
North Kalgoorlie Primary School Government Primary Kalgoorlie 481 960
St Mary's Primary School Catholic Primary Kalgoorlie 382 1030
South Kalgoorlie Primary School Government Primary Kalgoorlie 350 909
Hannans Primary School Government Primary Kalgoorlie 343 978
Boulder Primary School Government Primary Boulder 263 869
Goldfields Baptist College Independent Combined Somerville 239 1017
St Joseph's School Catholic Primary Boulder 193 994
East Kalgoorlie Primary School Government Primary Kalgoorlie 158 648
Kalgoorlie School Of The Air Government Primary Boulder 68 1029
Christian Aboriginal Parent-Directed School Kurrawang Independent Primary Kalgoorlie 59 753
O'Connor Education Support Centre Government Special Boulder 52 920
Eastern Goldfields Education Support Centre Government Special Kalgoorlie 47 879

Source: ACARA School Profiles 2025. ICSEA shown where reported; some schools (notably small primaries) do not publish ICSEA.

SEIFA socio-economic indexes

SEIFA 2021 ranks Australian areas across four dimensions. Scores are population-weighted averages of suburb-level SEIFA scores within Kalgoorlie-Boulder. Higher scores indicate more advantage; the national mean is 1000.

IRSAD

Relative socio-economic advantage and disadvantage

980
Ranked #49 of 123 WA LGAs

IRSD

Relative disadvantage only (lower = more disadvantaged)

1008

IER

Economic resources: income, wealth, housing

1010

IEO

Education and occupation: qualifications, skill levels

920

Suburbs in Kalgoorlie-Boulder

Kalgoorlie-Boulder contains 32 suburbs and 4 postcodes. Sorted by population.

SuburbPostcodePopulationMedian incomeMedian age
Boulder 6432 4,872 $1,968/wk 35
South Kalgoorlie 6430 4,416 $2,187/wk 34
Somerville 6430 4,165 $2,996/wk 33
Kalgoorlie 6430 3,711 $2,095/wk 35
Hannans 6430 2,410 $2,756/wk 33
Piccadilly 6430 2,305 $2,212/wk 33
Lamington 6430 2,036 $2,886/wk 33
South Boulder 6432 1,506 $1,848/wk 35
West Lamington 6430 1,373 $2,456/wk 34
Victory Heights 6432 772 $2,322/wk 35
Broadwood 6430 759 $3,557/wk 34
Mullingar 6430 318 $2,211/wk 34
Karlkurla 6430 270 $3,075/wk 33
Cundeelee 6434 139 31
Williamstown 6430 124 $987/wk 50
Rawlinna 6434 33 $1,499/wk 27
West Kalgoorlie 6430 32 $2,083/wk 45
Kanowna 6431 12 $474/wk 44
Ora Banda 6431 12 $4,499/wk 22
Emu Flat 6431 8 40
Feysville 6431 8 $350/wk 44
Parkeston 6434 5 $1,399/wk 62
Binduli 6430 4 $2,250/wk 55
Kurnalpi 6431 4 42
Forrest 6434 3 65
Boorara 6431
Brown Hill 6431
Bulong 6431 $3,874/wk 72
Fimiston 6432
Trafalgar 6431
Yilkari 6430
Zanthus 6434

Postcodes covered

6430, 6431, 6432, 6434

Compare Kalgoorlie-Boulder with neighbouring LGAs

Side-by-side demographic and socio-economic snapshot of Kalgoorlie-Boulder and its closest neighbouring LGAs.

LGA Population Median age Median HH income SEIFA IRSAD % renting % overseas-born
Kalgoorlie-Boulder (WA) 29,297 34.1 $2,376/wk 980 38.2% 23.9%
Dundas 679 49.9 $993/wk 854 31.4% 19.0%
Coolgardie 3,485 38.4 $1,851/wk 871 36.8% 16.6%
Menzies 526 39.2 $1,137/wk 858 63.0% 16.5%

Services and amenities

NDIS Providers NDIS provider directory for Kalgoorlie-Boulder Climate & weather Climate data for Boulder

Frequently asked questions about Kalgoorlie-Boulder

What is the population of Kalgoorlie-Boulder?

The 2021 Census recorded 29,297 people living in Kalgoorlie-Boulder, across 32 suburbs.

What suburbs are in Kalgoorlie-Boulder?

Kalgoorlie-Boulder contains 32 suburbs. The most populous are Boulder, South Kalgoorlie, Somerville, Kalgoorlie, Hannans.See the full list in the Suburbs section above.

What postcodes are in Kalgoorlie-Boulder?

Kalgoorlie-Boulder covers 4 postcodes: 6430, 6431, 6432, 6434.

What is the median household income in Kalgoorlie-Boulder?

The population-weighted median household income across Kalgoorlie-Boulder is $2,376 per week (2021 Census), ranking #10 of 123 WA LGAs.

How many schools are in Kalgoorlie-Boulder?

Kalgoorlie-Boulder has 17 schools, including 12 government, 3 Catholic, and 2 independent schools (ACARA 2025).

What is the SEIFA score for Kalgoorlie-Boulder?

Kalgoorlie-Boulder has a population-weighted SEIFA IRSAD score of 980, where the national average is 1000. Higher scores indicate more relative advantage.

Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 (IRSD, IRSAD, IER, IEO), ACARA School Profiles 2025, ABS ASGS 2021 LGA boundaries. How this data is sourced.