# Population density

Estimates the resident population per square mile in the surrounding postcode.

- API name: `population_density`
- Category: Demography
- Type · unit: Float · per_sq_mi
- Postcodes with a value: 31.1K (91.1%)
- Latest collection: Dec 31, 2024, refreshed yearly
- How values combine: Read from a single source field.
- Middle 50% of values: 20 to 743 per_sq_mi

## Links

- [Catalog page](/catalog/v2/population_density)
- [Published statistics (JSON)](https://static.faraday.ai/figv2/population_density.json)
- [API reference](/docs/reference/getattribute)