Spring Hill is a census-designated place (CDP) in Hernando County, Florida, United States. The population was 98,621 at the 2010 census, up from 69,078 at the 2000 census. The American Community Survey estimated the population in 2017 to be 113,508. Spring Hill belongs to Florida's Nature Coast region and is in the Tampa-St. Petersburg-Clearwater metro area. It is east of Hernando Beach, southwest of Brooksville, and north of Tampa. The estimated median annual household income in the CDP was $45,468.