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is an unincorporated community in Sumner County, Tennessee, United States. It is located along Tennessee State Route 25 about seven miles east of Gallatin, Tennessee. The area has its own post office. The Zip Code for Castalian Springs is 37031. In the early 19th century, it was known locally as Bledsoe's Lick.
On February 5, 2008, in the 2008 Super Tuesday tornado outbreak, the town was hit by a strong tornado (at least EF2) that claimed 7 lives. The structure Wynnewood was heavily damaged by the storm and the post office was completely destroyed. Castalian Springs captivated news headlines when an 11-month-old boy, Kyson Stowell, was found alive in the debris of his house. Originally thought to be a children's doll, the boy moved just slightly when a rescuer, David Harmon, noticed the movement. He had been blown 150 yards. Kyson's mother who was shielding him had died in the storm.
Among the notable natives of Castilian Springs / Bledsoe's Lick was William B. Bate, a governor of Tennessee, U.S. Senator, and Confederate major general in the American Civil War, and Humphrey Bate, an early Grand Ole Opry string band leader.