Cerulean is a census-designated place and unincorporated community in Trigg County, Kentucky, United States. At one time, it was a city, incorporated as Cerulean Springs. It lies along Kentucky Routes 124 and 126 northeast of the city of Cadiz, the county seat of Trigg County. Its elevation is 512 feet (156 m), and it is located at 36°57′34″N 87°42′36″W / 36.95944°N 87.71000°W (36.9594919, -87.7100107). Although it is unincorporated, it has a post office, with the ZIP code of 42215.
The majority of Cerulean is located in Trigg County with a small portion in Christian County.
- Rand McNally. The Road Atlas '06. Chicago: Rand McNally, 2006, p. 42.
- Geographic Names Information System Feature Detail Report, Geographic Names Information System, 1979-09-20. Accessed 2007-12-30.
- Zip Code Lookup Archived May 17, 2011, at the Wayback Machine.
- Rennick, Robert M. (1987). Kentucky Place Names. University Press of Kentucky. p. 55. Retrieved 2013-04-28.