Orangeville is a city in northwestern Emery County, Utah, United States, at the edge of the Manti-La Sal National Forest.

According to the United States Census Bureau, the city has a total area of 1.4 square miles (3.5 km2), all land.

In 1879, when a post office was established, it was named Orangeville after Orange Seely, the first man called to settle Castle Valley.

Ultimately, two settlements about four miles apart developed, one on the northwest side of the creek, the other on the southeast, and the settlers decided that each should have a name.

"Some contended that the lower town, now Castle Dale, should have been Orangeville because it was the home of Bishop Orange Seely, in whose honor the name was suggested by Erastus Snow, and Orangeville should have retained the original name of Castle Dale because the settlers first located there.

The fire was caused by a faulty air compressor, which was allowed to run unattended in an area that was not fire-proofed.