Dewmaine was an unincorporated African-American community in Williamson County, Illinois

Williamson County, Illinois

-2010:Whereas according to the 2010 U.S. Census Bureau:*92.7% White*3.8% Black*0.4% Native American*0.8% Asian*0.0% Native Hawaiian or Pacific Islander*1.7% Two or more races*0.4% Other races*2.0% Hispanic or Latino -2000:...

, based around a coal mine. Today the area is almost completely non-residential and vacant land, though it now sits at the northern edge of Carterville

Carterville, Illinois

Carterville is a city in Williamson County, Illinois, in the United States, and is geographically situated between Carbondale, Illinois and Marion, Illinois. The city is located next to Crab Orchard National Wildlife Refuge. The Refuge's of land and water contain a wide diversity of flora and...

. It was named in honor of Admiral Dewey

George Dewey

George Dewey was an admiral of the United States Navy. He is best known for his victory at the Battle of Manila Bay during the Spanish-American War...

 and the USS Maine

USS Maine (ACR-1)

USS Maine was the United States Navy's second commissioned pre-dreadnought battleship, although she was originally classified as an armored cruiser. She is best known for her catastrophic loss in Havana harbor. Maine had been sent to Havana, Cuba to protect U.S. interests during the Cuban revolt...

 from the Spanish-American War

Spanish-American War

The Spanish–American War was a conflict in 1898 between Spain and the United States, effectively the result of American intervention in the ongoing Cuban War of Independence...

.

A post office by the name Dewmaine opened up 6 March 1901 and discontinued operations on 31 July 1931. It is now served by the Carterville post office. Estimated population in 1958 was 50.