Manly is a city in Worth County, Iowa, United States, whose population was 1,256 at the time of the 2020 census.

In 1912 the Rock Island made it a division point, with roundhouse and shops that employed several hundred workers.

[3] A Rock Island caboose sits at the southeast railroad crossing of IA-9 in commemoration of the town's history, and in 2006 a Rock Island engine was installed next to it with a dedication ceremony held on Manly's annual Railroad/Ag Days celebration.

[5] Manly is located 16 miles south of the Minnesota border placed at the conjunction between Highway 65 and 9.

According to the United States Census Bureau, the city has a total area of 1.47 square miles (3.81 km2), all land.

All students then attend middle school in a Nora Springs building.

There were 600 housing units at an average density of 424.2 per square mile (163.8/km2).

There were 601 housing units at an average density of 408.8 per square mile (157.8/km2).

29.2% of all households were made up of individuals, and 16.3% had someone living alone who was 65 years of age or older.

30.2% of all households were made up of individuals, and 16.6% had someone living alone who was 65 years of age or older.