Idlewild is a census-designated place (CDP) in Tulare County, California. Idlewild sits at an elevation of . The 2020 United States census reported Idlewild's population was 32, down from 43 at the 2010 census.
According to the United States Census Bureau, the CDP covers an area of 0.5 square miles (1.2 km), all of it land.
Idlewild first appeared as a census designated place in the 2010 U.S. census.
The 2020 United States census reported that Idlewild had a population of 32. Of the residents, 31 were White, 1 was Native American, and none were Hispanic or Latino.
There were 7 households, which were all families. The median age was 64.0years.
There were 34 housing units, of which 7 were occupied year round, all by homeowners. The other 27 housing units were used seasonally.
It is in the Linns Valley-Poso Flat Union School District and the Porterville Unified School District for grades 9-12.