Whiteash is a Census designated place in Williamson County, Illinois, United States.

In 1903, Gent bought the site of the village from Samuel K. Casey, publisher of the Egyptian Press newspaper also of Marion.

He in turn had inherited it from his grandfather George W. Binkley who had homesteaded the land and entered it with the government in 1837.

Gent platted the village on July 3, 1903, in the northwest corner of Section 31, Township 8 South, Range 3 East of the Third Principal Meridian, also known as Lake Creek Precinct.

[citation needed] A post office opened there on February 29, 1904, with Robert T. Payne as postmaster.

About 22.1% of families and 23.3% of the population were below the poverty line, including 35.2% of those under the age of eighteen and 14.7% of those 65 or over.