Its post office opened on March 29, 1904, and was believed to have been originally named after Willoughby, England, from where the ancestors of the area's settlers were thought to have emigrated. The name "Williba" was supposedly a corruption adopted by its first postmaster to fit the name on a rubber stamp. The post office was later closed.
- "Williba, Kentucky". Geographic Names Information System. United States Geological Survey.
- Rennick, Robert M. (1988), Kentucky Place Names (reprint ed.), University Press of Kentucky, p. 320, ISBN 978-0-8131-0179-8
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