Squadala City was originally a city known as Boringname (bore-in-am-ee). During the Hyrulian Civil War, Squadala Man lived in Boringname. After the war ended, Squadala Man made East Hyrule part of his empire, and made Boringname the capital of his empire, renamed Squadala City.
Squadala Man now continues to live in Squadala City, and governs the empire form here. It is also where the HQ of Squadala Cable is located.