36.2% of all households were made up of individuals, and 20% had someone living alone who was 65 years of age or older.

36.2% of all households were made up of individuals, and 23.6% had someone living alone who was 65 years of age or older.

[8] According to the United States Census Bureau, the city has a total area of 4.21 square miles (10.90 km2), all land.

[9] Humid continental climate is a climatic region typified by large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters.

[10] Rockwell City is within the South Central Calhoun Community School District.

[14] In 1958, Rockwell City resident Barry Wichmann was recognized for his IQ of 162[16][17][18] Wichmann's school lacked the resources to fully meet his needs, and his high intelligence led to frequent bouts of loneliness.

He eventually moved to Winchester, Virginia, where he finished high school and went on to obtain a PhD in clinical psychology from James Madison University.

[19] Since 2009, Rockwell City has hosted the annual "Sweet Corn Daze" festival, which typically takes place on the first weekend in August and includes a parade, various events, and vendors.

[23] Rockwell City was selected as the location for the county fair in a county-wide election in 1980.

The courthouse was constructed in 1914, with an architectural style of Neoclassical Revival and outer walls of limestone, with a red clay tile roof.

[26] The museum traces its origins back to 1902 and seeks to preserve documents and artifacts related to the history and people of Calhoun County.

[26] As of January 2023, the museum is open on Sundays from 1-3pm from June to September or by appointment.