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square mile

American  
[skwair mahyl] / ˈskwɛər ˈmaɪl /

noun

  1. a unit of area measurement equal to a square measuring one mile on each side; equivalent to 2.59 square kilometers. mi 2 , sq. mi.


Etymology

Origin of square mile

First recorded in 1620–30

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Using data from Europe's Sentinel-1 radar satellites, the scientists monitored seasonal changes on nearly every Alaska glacier larger than about half a square mile between mid-2016 and 2024.

From Science Daily • Jun. 12, 2026

Today, Hood County has the sixth most planned data centers among Texas counties; per square mile, it ranks third.

From Salon • Jun. 6, 2026

President Thomas Jefferson acquired the 828,000-square-mile Louisiana Purchase in 1803 for $15 million, or about $18 per square mile.

From Barron's • Jan. 8, 2026

The country’s east is heavily urbanized, with a population density about 50 times that of Arctic Scandinavia and Finland, where every square mile houses on average five people.

From The Wall Street Journal • Dec. 27, 2025

Tonga, Samoa, and the Societies achieved 210-250 people per square mile and Hawaii 300.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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