Cultural diversity

Ancestry

About this topic

Ancestry describes a person's cultural association and ethnic background, and Census respondents can report more than one ancestry. It is a broader cultural measure than country of birth because it can reflect family heritage across generations.

This topic helps show the size and diversity of cultural groups in an area, including groups whose members were born in Australia. Because multiple ancestries can be reported, ancestry totals can exceed the total population, so it is best read with birthplace, language used at home, and religion.

Interpretation notes

  • People can report up to two ancestries, so category totals represent responses rather than a single unduplicated person count.
  • ABS advises that ancestry is best used with birthplace and language, because ancestry alone is a broad measure of ethnicity and cultural background.
  • The 2021 form added separate Aboriginal and Torres Strait Islander mark boxes, so those categories need caution in over-time comparison.

Key insight

In 2021, the largest ancestry groups among residents in Blue Mountain were Australian, English and Dutch.

Section overview

Ancestry - Ranked by size

Blue Mountain - Total persons (Usual residence)

This table summarises ancestry for Blue Mountain in 2021 for persons, with comparison against Isaac (R) and change since 2016.

Ancestry - Ranked by size snapshot

2021 distribution by category for Blue Mountain, with comparison markers for Isaac (R).

Blue Mountain
Isaac (R)

Australian

2021 count

35

% of total

42.2%

Change from 2016

-10.0pp

English

2021 count

24

% of total

28.9%

Change from 2016

-8.1pp

Data table

Ancestry for Blue Mountain. Ancestry - Ranked by size. 2021 and 2016 counts, percentages, and change compared with Isaac (R).

Ancestry for Blue Mountain. Ancestry - Ranked by size. 2021 and 2016 counts, percentages, and change compared with Isaac (R).
Ancestry for Blue Mountain. Ancestry - Ranked by size. 2021 and 2016 counts, percentages, and change compared with Isaac (R).
Category20212016Change
Count%Isaac (R)%Count%Isaac (R)%Countpp
Australian3542.2%36.4%4852.2%43.2%-13-10.0pp
English2428.9%33.4%3437.0%34.7%-10-8.1pp

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