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The three largest ancestries in Seaford in 2021 were English, Australian and Scottish.

Ancestry defines the cultural association and ethnic background of an individual going back three generations. Ancestry is a good measure of the total size of cultural groups in Seaford regardless of where they were born or what language they speak.

Ancestry data, should be combined with data on Birthplace, Language Spoken at Home and Religion for a more complete picture of Seaford's ethnic characteristics.

Please note that the "Australian Aboriginal" and "Torres Strait Islander" categories in this topic are not directly comparable from 2021 to previous years, due to a change in the wording of the question. In 2021, these options were marked boxes on the question rather than write-in options. The "Aboriginal and Torres Strait Islander Origin" question is still considered a more reliable count for this group, and can be found on the Population summary page.

Please note: Due to changes in ABS rules around perturbation and additivity of data to protect the confidentiality of individuals, counts of ancestry groups and totals derived from them may differ slightly from those published by the ABS. For more information see notes on data confidentiality.

Q:

Derived from the Census question:

'What is the person's ancestry?'

Multi-response

Ancestry - Totals
Seaford - Total persons (Usual residence)20212016Change
Ancestry totalsNumber%City of Onkaparinga %Number%City of Onkaparinga %2016 to 2021
Not stated1752.83.22804.94.1-105
Total responses6,166----5,735----+431
Total people4,498----4,458----+40
Source: Australian Bureau of Statistics, Census of Population and Housing 2016 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information
Ancestry - Ranked by size
Seaford - Total persons (Usual residence)20212016Change
AncestryNumber%City of Onkaparinga %Number%City of Onkaparinga %2016 to 2021
English2,35252.348.52,19249.247.8+160
Australian1,65336.737.71,67237.537.5-19
Scottish47010.410.03818.59.6+89
Irish4018.98.53367.58.7+65
German2986.67.42866.47.2+12
Dutch1242.82.41323.02.2-8
Italian942.12.9922.12.7+2
Australian Aboriginal781.71.9110.20.2+67
Welsh531.21.1681.51.0-15
Polish441.01.2370.81.1+7
Show all (33 entries)

Excludes ancestries with fewer than 10 responses (multi-response).

Dominant groups

Analysis of the ancestry responses of the population in Seaford in 2021 shows that the top five ancestries nominated were:

  • English (2,352 people or 52.3%)
  • Australian (1,653 people or 36.7%)
  • Scottish (470 people or 10.4%)
  • Irish (401 people or 8.9%)
  • German (298 people or 6.6%)

In combination these five ancestries account for 5,174 responses in total, or 115.03% of all responses.

The major difference between the ancestries of the population in Seaford and the City of Onkaparinga was:

  • A larger percentage of people with English ancestry (52.3% compared to 48.5%)

Emerging groups

The largest changes in the reported ancestries of the population in this area between 2016 and 2021 were:

  • English (+160 persons)
  • Scottish (+89 persons)
  • Australian Aboriginal (+67 persons)
  • Irish (+65 persons)

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