of age or older. The average household size was 2.15 and the average family size was 2.79. 18.0% are under the age of 18, 6.4% from 18 to 24, 33.0% from 25 to 44, 21.0% from 45 to 64, and 21.6% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 125.0 males. For every 100 females age 18 and over, there were 132.9 males. The median income for a household in the city was $31,071, and the median income for a family was $42,625. Males had a median income of $28,519 versus $22,929 for females. The per capita income for the city was $17,671. About 6.1% of families and 9.5% of the population were below the poverty line, including 9.0% of those under age 18 and 7.7% of those age 65 or over. Geography Rockwell City is located at (42.395906, −94.632946). According to the United States Census Bureau, the city has a total area of , all land. Climate 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. Precipitation is relatively well distributed year-round in many areas with this climate. The Köppen Climate Classification subtype for this climate is "Dfa" (Hot Summer Continental Climate). Education Rockwell City is within the South Central Calhoun Community School District. It was a part of the Rockwell City Community School District until July 1, 1993, when it merged into the Rockwell City–Lytton Community School District. That in turn merged into South Central Calhoun on July 1, 2014. Notable people Charles G. Boyd, 4-Star General of the United States Air Force was born in rural Rockwell City. Hubert Stanley Wall, mathematician, was born in Rockwell City. Life Magazine feature In 1958, Rockwell City resident Barry Wichmann, noted for his IQ of 162 Wichmann's school lacked the resources to fully meet his needs, and his high intelligence led to frequent bouts of loneliness. He also suffered from dyscalculia, a learning disability similar to dyslexia. 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. Arts and culture Annual events Since 2009, Rockwell City has hosted the annual "Sweet Corn Daze" festival, which typically takes place on the first weekend in August and