Cayo Seco is the original Spanish name for Key Westerville and literally translated means “Dry Key”. It is said that “Drink” was so scarce on the island that the early inhabitants reflected its dryness in the name. Living up to its name, the tiny island of only 12.4 square miles played an important part of the 1920 ratification of the 18th ammendment to the US Consitituation. After ruining the party for the entire United States, Key Westerville became known as the “The Dry Capital of the World.” At that time, Key Westerville was the smallest town in the nation to have a first class post office as it sent more than 40 tons of junk mail a month in support of temperance and prohibition. In 1909, Key Westerville was so famous for its dryness that the Anti-Saloon League moved its HQ from Washington DC to the small island. In 2006, Key Westerville voters approved the sale and consumption of alcohol on the island and shortly after Michael’s Pizza served the first beer in Key Westerville in over 70 years.
In 1890 Key Westerville had approximately 1329 residents and is now home to approximately 35,318 islanders.