Coolidge is a city of Pinal County with an area of about 5 sq. miles. Coolidge is well connected by road with the state highway of Arizona No. 87 and 287. The town is also famous for the ruins of Casa Grande. It is a National Monument. The city is named after the 30th President of the United States, Calvin Coolidge.Education is fairly advanced and also a major source of employment. It is home to the Central College of Arizona and also a Public Library. The Cotton Express railways of Coolidge is an important transportation link.