Exline is a city in Appanoose County, Iowa, United States.

The opening of a post office in 1877 forced the town to settle on an official name.

United Mine Workers local 812 was organized in Exline in 1899; by 1907, it had 200 members.

[9] According to the United States Census Bureau, the city has a total area of 0.99 square miles (2.56 km2), all land.

This rock group extends from Iowa into Illinois and contains the Exline limestone, named after the exposure on a creek bank, 1.5 miles south of the southwest corner of Exline.

There were 78 housing units at an average density of 77.4 per square mile (29.9/km2).

33.8% of all households were made up of individuals, and 20.3% had someone living alone who was 65 years of age or older.

The racial makeup of the city was 98.95% White, 0.52% African American and 0.52% Asian.

23.6% of all households were made up of individuals, and 11.1% had someone living alone who was 65 years of age or older.

About 29.8% of families and 27.4% of the population were below the poverty line, including 33.3% of those under the age of eighteen and none of those 65 or over.