South Australia · Suburb Profile

Ob Flat SA — Suburb Profile

Population, median income, rent prices, housing costs and demographics for Ob Flat, South Australia. ABS Census 2021.

The population of Ob Flat SA is 470 according to the 2021 Census. The median personal income in Ob Flat is $860 per week ($44,720 per year). Median rent in Ob Flat is $250 per week ($1,083 per month). Ob Flat has a median age of 48 years, older than the national median of 38. Ob Flat has a population density of 18.3 people per km².

The most common religion is No Religion (49% of residents). After English, the most spoken language is Other. The median monthly mortgage repayment in Ob Flat is $1,625.

There were 2 recorded offences in Ob Flat in 2025-26, a rate of 4 offences per 1,000 people. The most common offence category was break & enter (1 offences).

Ob Flat Map

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Ob Flat Population

residents (Census 2021)

Ob Flat Median Income & Rent

💰

Median Income

$860/wk

$44,720 per year

#2627 of 14,663

🏠

Median Rent

$250/wk

$1,083 per month

#6115 of 14,663

👤

Median Age

48years

10 years older than national median

🏡

Mortgage

$1,625/mo

Avg household size: 2.6 · 0.7 per bedroom

Ob Flat Demographics

Gender Split

Male 47.0% (219) Female 53.0% (247)

Population Density

18.3

people per km²

470 people · 25.7 km²

Households

2.6

Avg household size

0.7

Persons per bedroom

$2,210

Family income/wk

Ob Flat Age Distribution

0-4

5-9

10-14

15-19

20-24

25-29

30-34

35-39

40-44

45-49

50-54

55-59

60-64

65-69

70-74

75-79

80-84

♂ Male ♀ Female

Source: ABS Census 2021 — Suburb & Locality (SAL)

Ob Flat Housing Tenure

🏠

Owned outright

42.1% 56 dwellings

🏦

Owned with mortgage

57.9% 77 dwellings

Source: ABS Census 2021 — Suburb & Locality (SAL)

Ob Flat Country of Birth

Australia

100.0%

Source: ABS Census 2021 G09 — Country of Birth by SAL

Ob Flat Religion

No Religion

48.8%

Catholic

17.1%

Not stated

10.0%

Anglican

7.3%

Uniting Church

5.8%

Christinty Prsbytrin Refrmd

4.5%

Christian (other)

3.3%

Lutheran

3.1%

Source: ABS Census 2021 G14 — Religion by SAL

Ob Flat Education Level

Year 12 or equivalent

51.2%

Year 11 or equivalent

28.7%

Year 10 or equivalent

14.9%

Year 9 or equivalent

5.2%

Source: ABS Census 2021 G16 — Highest Year of School by SAL

Ob Flat Languages Spoken at Home

Other

62.5%

Greek

37.5%

Source: ABS Census 2021 G13 — Language Spoken at Home by SAL

Ob Flat Employment

💼

Employed full-time

42.0% 146 people

⏰

Employed part-time

27.9% 97 people

🔍

Unemployed

2.0% 7 people

🏠

Not in labour force

28.2% 98 people

Source: ABS Census 2021 G46 — Labour Force Status by SAL

Ob Flat Qualifications

Certificate III/IV

49.2%

Bachelor Degree

25.9%

Advanced Diploma/Diploma

11.9%

Graduate Diploma/Certificate

5.9%

Postgraduate Degree

4.3%

Certificate I/II

2.7%

Source: ABS Census 2021 G49 — Non-School Qualification by SAL

Ob Flat Occupation

Professionals

27.1%

Technicians & Trade Workers

18.7%

Managers

18.7%

Sales Workers

11.6%

Community & Personal Service

7.7%

Clerical & Administrative

6.5%

Labourers

5.8%

Machinery Operators & Drivers

3.9%

Source: ABS Census 2021 G51 — Industry of Employment by Occupation

Ob Flat Field of Study

Engineering

20.9%

Management & Commerce

19.6%

Education

14.2%

Health

12.2%

Society & Culture

10.8%

Architecture & Building

8.1%

Food, Hospitality & Personal Services

6.8%

Agriculture & Environment

5.4%

Natural & Physical Sciences

2.0%

Source: ABS Census 2021 G51 — Field of Study by SAL

Ob Flat Dwelling Types

Separate house

100.0%

Source: ABS Census 2021 G36 — Dwelling Structure by SAL

Ob Flat Weekly Household Income

Nil/Negative/wk

5.4%

$400-$499/wk

3.4%

$500-$649/wk

2.0%

$650-$799/wk

7.5%

$800-$999/wk

2.7%

$1,000-$1,249/wk

2.7%

$1,250-$1,499/wk

8.2%

$1,500-$1,749/wk

2.7%

$1,750-$1,999/wk

9.5%

$2,000-$2,499/wk

18.4%

$2,500-$2,999/wk

9.5%

$3,000-$3,499/wk

11.6%

$3,500-$3,999/wk

3.4%

$4,000+/wk

12.9%

Source: ABS Census 2021 G33 — Household Income by SAL

Ob Flat Marital Status

💍

Married

67.3% 272

↔️

Separated

1.2% 5

📋

Divorced

4.7% 19

🕊️

Widowed

2.7% 11

👤

Never married

24.0% 97

Source: ABS Census 2021 G05 — Marital Status by SAL

Ob Flat Ancestry

Australian

34.0%

English

29.4%

German

8.7%

Scottish

8.3%

Irish

6.0%

Other

3.9%

Dutch

3.4%

Aboriginal Australianralian

1.8%

New Zealander

1.8%

Italian

1.4%

Chinese

0.7%

French

0.7%

Source: ABS Census 2021 G08 — Ancestry by SAL

Ob Flat School & University Attendance

Primary — Government

30.5%

Secondary — Government

26.8%

Vocational Education

15.9%

Pre-school

9.8%

Primary — Other Non-Govt

7.3%

Primary — Catholic

6.1%

Secondary — Catholic

3.7%

Source: ABS Census 2021 G15 — Type of Educational Institution by SAL

Ob Flat Need for Assistance

♿

Needs assistance

2.1% 18

✅

No need for assistance

97.9% 826

Source: ABS Census 2021 G18 — Core Activity Need for Assistance by SAL

Ob Flat Volunteering

🤝

Volunteer

23.4% 83

—

Not a volunteer

76.6% 272

Source: ABS Census 2021 G23 — Voluntary Work by SAL

Ob Flat Monthly Mortgage Repayments

$0-$299/mo

4.7%

$450-$599/mo

4.7%

$800-$999/mo

4.7%

$1,000-$1,399/mo

14.1%

$1,400-$1,799/mo

29.7%

$1,800-$2,399/mo

23.4%

$2,400-$2,999/mo

14.1%

$3,000-$3,999/mo

4.7%

Source: ABS Census 2021 G38 — Mortgage Repayment by SAL

Ob Flat How People Get to Work

Car (driver)

80.6%

Did not go to work

9.9%

Truck

4.5%

Car (passenger)

3.6%

Walked only

1.4%

Source: ABS Census 2021 G62 — Method of Travel to Work by SAL

Ob Flat Car Ownership

1 vehicle

12.3%

2 vehicles

36.1%

3 vehicles

24.5%

4+ vehicles

27.1%

Source: ABS Census 2021 G34 — Motor Vehicles per Dwelling by SAL

Ob Flat Number of Bedrooms

2 bedrooms

4.6%

3 bedrooms

45.4%

4 bedrooms

41.4%

5 bedrooms

8.6%

Source: ABS Census 2021 G41 — Number of Bedrooms by SAL

Ob Flat Population Mobility

12.0%

moved in the last year

32.2%

moved in the last 5 years

1.9%

unemployment rate (Census)

66.4%

labour force participation

Source: ABS Census 2021 G43 — Summary by SAL

Ob Flat Indigenous Population

1.2%

Aboriginal & Torres Strait Islander

Indigenous residents

823

Non-Indigenous residents

Source: ABS Census 2021 G07 — Indigenous Status by SAL

Ob Flat Long-term Health Conditions

Mental health

Asthma

Cancer

Heart disease

Diabetes

Arthritis

Kidney disease

Lung condition

Source: ABS Census 2021 G19 — Long-term Health Conditions by SAL

Ob Flat Personal Weekly Income Distribution

$0 or less/wk

9.9%

$1-$149/wk

3.3%

$150-$299/wk

5.0%

$300-$399/wk

4.6%

$400-$499/wk

3.3%

$500-$649/wk

3.6%

$650-$799/wk

12.2%

$800-$999/wk

9.2%

$1,000-$1,249/wk

11.6%

$1,250-$1,499/wk

8.9%

$1,500-$1,749/wk

10.2%

$1,750-$1,999/wk

5.0%

$2,000-$2,999/wk

10.6%

$3,500+/wk

2.6%

Source: ABS Census 2021 G17 — Personal Income by SAL

Ob Flat Family Structure

Couple — no children

37.8%

Couple — children under 15

35.9%

Couple — no children under 15

20.4%

One parent — children under 15

3.0%

One parent — no children under 15

3.0%

Source: ABS Census 2021 G29 — Family Composition by SAL

Ob Flat Military Service

🏅

Previously served

1.4% 5

👤

Never served

98.6% 350

Source: ABS Census 2021 G22 — ADF Service by SAL

Ob Flat Unpaid Carers

🤲

Provided unpaid assistance

17.5% 63

—

Did not provide

82.5% 298

Source: ABS Census 2021 G25 — Unpaid Assistance by SAL

Ob Flat Children Ever Born

No children

25.1%

1 child

1.7%

2 children

32.6%

3 children

26.3%

4 children

14.3%

Source: ABS Census 2021 G28 — Children Ever Born by SAL

Ob Flat When Migrants Arrived

Before 1951

1961–1970

1981–1990

2001–2010

2011–2015

Source: ABS Census 2021 G10 — Year of Arrival by SAL

Ob Flat Unpaid Domestic Work

Less than 5 hours

22.7%

5–14 hours

33.1%

15–29 hours

13.4%

30+ hours

12.0%

Did not do domestic work

18.8%

Source: ABS Census 2021 G24 — Unpaid Domestic Work by SAL

Ob Flat Household Size

1 person

15.9%

2 persons

48.3%

3 persons

13.2%

4 persons

15.9%

5 persons

4.6%

6+ persons

2.0%

Source: ABS Census 2021 G35 — Household Size by SAL

Ob Flat Where Residents Moved From

Same address

375

Moved from SA

Moved — same area (SA2)

Moved from VIC

Source: ABS Census 2021 G44 — Address 1 Year Ago by SAL

Ob Flat Family Blending

Intact family — no other children

92.0%

Blended family — no other children

8.0%

Source: ABS Census 2021 G31 — Family Blending by SAL

Ob Flat Crime Statistics

Reported offences in 2025-26 — 2 total

Break & Enter

Theft

Offence trend by year:

2021

2022

2023

2024

2025

Source: SA Government Open Data — data.sa.gov.au

Ob Flat Rent Prices & Affordability

12%

of income

Affordable

Household Income $2,104/wk

Median Rent $250/wk

Rent-to-Income 11.9%

Rent is under 25% of household income — generally considered affordable.

If you earn X in Ob Flat

Your weekly income

≈ $9,117/month

Median rent $250/wk

Left after rent $1,854/wk

Rent share 11.9%

Cheaper alternatives with similar incomes

Penola

Income: $804/wk Rent: $198/wk Save: $52/wk

Jamestown

Income: $730/wk Rent: $215/wk Save: $35/wk

Monash (SA)

Income: $755/wk Rent: $230/wk Save: $20/wk

Whyalla

Income: $815/wk Rent: $200/wk Save: $50/wk

Angaston

Income: $733/wk Rent: $249/wk Save: $1/wk

Whyalla Playford

Income: $771/wk Rent: $200/wk Save: $50/wk

Keith

Income: $746/wk Rent: $180/wk Save: $70/wk

Risdon Park South

Income: $713/wk Rent: $185/wk Save: $65/wk

Ob Flat vs State & National Average

Nearby Suburbs in SA

Verdun

Pop: 235 Income: $1,010/wk Rent: $293/wk

Brownlow Ki

Pop: 238 Income: $659/wk Rent: $208/wk

Port Mannum

Pop: 239 Income: $510/wk Rent: $245/wk

Gould Creek

Pop: 240 Income: $931/wk Rent: $550/wk

Nangkita

Pop: 242 Income: $684/wk Rent: $150/wk

Commissariat Point

Pop: 243 Income: $759/wk Rent: $250/wk

Compare Ob Flat

Ob Flat vs Verdun →Ob Flat vs Brownlow Ki →Ob Flat vs Port Mannum →Ob Flat vs Gould Creek →

Frequently Asked Questions About Ob Flat

What is the population of Ob Flat SA?

The population of Ob Flat SA is 470 according to the ABS Census 2021.The suburb has a population density of 18.3 people per km².Ob Flat is ranked #5,125 out of 14,663 suburbs by population.

What is the median income in Ob Flat?

The median personal income in Ob Flat SA is $860 per week, or $44,720 per year.The median household income is $2,104 per week.Family income is $2,210 per week.Ob Flat is ranked #2,627 by income out of 14,663 Australian suburbs.

How much is rent in Ob Flat?

Median rent in Ob Flat SA is $250 per week ($1,083 per month).Rent represents 11.9% of household income, which is considered affordable.Ob Flat ranks #6,115 out of 14,663 suburbs by rent.

What are mortgage repayments in Ob Flat?

The median monthly mortgage repayment in Ob Flat SA is $1,625. This data comes from the ABS Census 2021 and reflects mortgage repayments for owner-occupied dwellings.

What is the median age in Ob Flat?

The median age in Ob Flat SA is 48 years.This is older than the national median age of 38 years.

Is Ob Flat a good suburb to live in?

Ob Flat is a suburb in South Australia with a population of 470.The median income is $860/wk, which is above the SA average of $763/wk.Rent affordability is rated as affordable (11.9% of household income). See the full suburb profile above for detailed statistics.

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Data: Australian Bureau of Statistics, Census of Population and Housing 2021. SA2 area: 41068. All dollar figures in AUD.