Physical Characteristics. Calhoun County is in northwest Florida and is bordered by Bay, Jackson, Liberty, and Gulf counties. The county has 567.80 square feet of land and 6.20 square feet of water for a total of 574.00 square miles. The average January temperature is 53.1 degrees Fahrenheit, and the average August temperature is 81.5 degrees Fahrenheit. The average annual rainfall is 58.94 inches.
History. Calhoun County was established from a portion of Escambia County in 1838. The county was named for John C. Calhoun, Senator from South Carolina and an outspoken advocate of the doctrine of states' rights.
