Get field metadata

Get detailed metadata for a single field, including related fields.

Field types:

• Count fields (unit: "count") — raw census counts (e.g. summary.population.persons). Use directly with ?fields= on the demographics endpoint.
• Median fields (unit: "years", "dollars_weekly", etc.) — pre-computed medians from the ABS (e.g. medians.age, medians.personal_income_weekly).
• Derived percentage fields (unit: "percentage", is_derived: true) — computed at query time as (numerator / denominator) * 100. Request with ?fields=derived.pct_indigenous. Returns a value between 0 and 100. 63 static fields covering population, age brackets, housing, employment, qualifications, and more. Use GET /v1/data/demographics/derived to list all available fields with labels.

Dimensions:

Fields with dimensions like {"sex": "female", "age_min": 25, "age_max": 34} are used by segment queries. Add &sex=female&age_min=25&age_max=34 to a demographics request to get a cross-tab breakdown filtered to that segment.

Mixing field types:

You can request regular counts, medians, and derived percentages together:

?fields=summary.population.persons,medians.age,derived.pct_indigenous