mi²

What is a Square Mile?

Area Unit

Definition

A square mile is a unit of area equal to 640 acres or approximately 2.59 square kilometers.

History

The square mile has been used to measure large land areas in English-speaking countries, particularly for cities and counties.

Common Uses

  • City and county areas in the US
  • Population density calculations
  • Geographic descriptions
  • Historical land grants

Fun Facts

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Manhattan is about 23 square miles

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London is about 607 square miles

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The City of London (the Square Mile) is only about 1.12 square miles

All Square Mile Conversions