Square miles, 57, 918
Square kilometers, 149, 998
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Illinois has a total area of around 57,914 square miles.
Illinois is the 25th largest state in the United States in terms of land area, with approximately 57,914 square miles.
The state of Pennsylvania (postal abbreviation PA) covers a total area of 46,055 square miles (119,283 square kilometers), and is ranked as the thirty-third largest state in the U.S.
Delaware's area is approximately 1,949 square miles, making it the second smallest state in the United States.
Maryland is approximately the same size as Belgium in terms of land area. Both have a total area of around 12,000 square miles.