a grocery store chain called the Supply Store in 1930, which in turn became Hy-Vee (from their two names). Lamoni remained the company's headquarters until 1945, when it moved to Chariton, Iowa. The Lamoni area has a sizable Amish community, whose businesses are not open on Sundays. Geography Lamoni is located in southwest Decatur County on US Route 69. According to the United States Census Bureau, the city has an area of , of which is land and is water. Climate Lamoni has a humid continental climate (Köppen climate classification Dfa). Demographics 2010 census As of the census of 2010, there were 2,324 people, 770 households, and 427 families living in the city. The population density was . There were 927 housing units at an average density of . The racial makeup of the city was 88.6% White, 5.7% African American, 0.6% Native American, 1.1% Asian, 0.7% Pacific Islander, 1.1% from other races, and 2.0% from two or more races. Hispanic or Latino of any race were 4.5% of the population. There were 770 households, of which 24% had children under the age of 18 living with them, 42.7% were married couples living together, 9.2% had a female householder with no husband present, and 44.5% were non-families. 32.3% of all households were made up of individuals, and 13.6% had someone living alone who was 65 years of age or older. The average household size was 2.25 and the average family size was 2.84. 27.8% were under the age of 20, 25.6% from 20 to 24, 11.9% from 25 to 44, 15.8% from 45 to 64, and 15.5% were 65 years of age or older. The median age was 23.5 years. For every 100 females, there were 98.6 males. For every 100 females age 18 and over, there were 96.9 males. 2000 census As of the census of 2000, there were 2,444 people, 818 households, and 428 families living in the city. The population density was . There were 904 housing units at an average density of . The racial makeup of the city was 91.86% White, 2.95% African American, 0.16% Native American, 1.60% Asian, 0.41% Pacific Islander, 0.82% from other races, and 2.21% from two or more races. Hispanic or Latino of any race were 2.78% of the population. There were 818 households, out of which 21.4% had children under the age of 18 living with them, 44.7% were married