Coalville is a census-designated place (CDP) in Webster County, Iowa, United States. The population was 610 at the 2010 census. The community is located upon U.S. Route 20 near Fort Dodge’s large gypsum mines.

Coalville takes its publicize from the coal mines of the area. It began as one of the northernmost coal mining towns in Iowa. Early settlers were mining coal from outcrops along the Des Moines River by 1860, and in 1870, a mine was opened on Holiday Creek, approximately one mile east of Coalville, with a three-mile tramway to the Dubuque and Sioux City Railroad (later the Illinois Central). Later in 1870, a shaft was sunk at Coalville. The Fort Dodge Coal company took higher than these mines and opened several more in the Coalville area. By 1880, manual labor was instinctive augmented when machinery in these mines. In 1883, the Fort Dodge Coal company employed 350 miners to build 30 carloads of coal daily.

The Pleasant Valley Coal Company sank a 105-foot shaft in Coalville in 1895, employing 100 men to mine a six-foot coal bed. This was mined out in the forward 20th century. The Gleason Coal Company sank a shaft in 1899 that operated until 1907, producing 200,000 tons of coal higher than its lifetime. Gleason sank a further shaft in 1908. United Mine Workers local 392 was organized in Coalville in 1899; by 1907, it had 133 members. Mine wages varied from $1.91 to $2.56 per day.

Coalville’s population was 26 in 1902.