NSW Boundary Concordance Database: Area and Population Ratios

Four concordance datasets for NSW boundaries show relationships between Local Government Areas, Federal Electoral Divisions, State Electoral Districts, postcodes, and suburbs. Each dataset includes area_ratio and population_ratio_2021 attributes to indicate the portion of one boundary within another. The data is derived from Spatial Services and uses 2021 Census mesh block counts for population estimates.

Use Cases

• Analyze electoral representation based on area and population ratios between LGAs and Federal Electoral Divisions.
• Map service delivery or funding allocation based on population ratios between suburbs and LGAs.
• Perform spatial joins for demographic analysis using indicative postcode-to-LGA concordances.

Strengths

• Includes four distinct concordance datasets covering multiple boundary types.
• Provides both area_ratio and population_ratio_2021 attributes for each relationship.
• Population ratios are based on 2021 Census mesh block counts from the Australian Bureau of Statistics.

Limitations

• Postcode boundaries are derived from suburb data and are indicative, not official.
• Population ratios are based on August 2021 estimates and will not reflect subsequent changes.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Spatial Services (DCS)

Collection Method

Concordances calculated from boundary datasets; population estimates derived from 2021 Census mesh block counts.

Time Range

Population data reflects August 2021 Census estimates.

Freshness

Last updated 2026-05-18 01:48:07.742316; freshness should be verified.

Geography

New South Wales, Australia.