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Density
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Definition
A measure of how intensively land is used, typically expressed as dwellings per hectare (dph) or floor area ratio (FAR). High density allows more people to live close to services, reducing travel distances. Density alone does not determine liveability — it must be paired with quality of public space and mix of uses.
Example
Manhattan in New York has one of the highest residential densities in the USA (over 27,000 people per km²), yet is considered highly liveable due to its parks, transit, and fine-grained street network.