as near Little Rock Creek. The last earthquake along the Sandwich Fault was on February 10, 2010, with a previous tremor being reported in January 2007. In the immediate area of Sandwich, there are numerous communities which straddle county borders. Somonauk is split by the LaSalle-DeKalb county line, while the unincorporated community of Welland is split along the border of LaSalle and Lee counties further west; and Millington, Stavanger, and Seneca are also split along the county lines south of Sandwich. Climate Sandwich's climate typified by large seasonal temperature variances, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters. The Köppen Climate Classification subtype for this climate is "Dfa". (Hot Summer Continental Climate). Demographics As of the census of 2020, there were 7,221 people, 2,548 households, and 1,672 families in the city. The population density was . There were 2,891 housing units at a density of . The racial makeup of the city was 83.8% White, 1.1% African American, 0.5% Native American, 0.7% Asian, 6.5% from other races, and 7.4% from two or more races. Hispanic or Latino of any race were 14.8% of the population. There were 2,548 households, out of which 31.4% had children under the age of 18 living with them, 49.0% were married couples living together, 10.7% had a female householder with no husband present, and 34.4% were non-families. 24.4% of all households were made up of individuals, and 10.9% had someone living alone who was 65 years of age or older. The average household size was 2.82 and the average family size was 3.34. In the city, the population was spread out, with 7.9% under the age of 5, 26.4% under the age of 18, and 16.9% who were 65 years of age and over. The median age was 37.2 years. For every 100 females there were 102.1 males. The median income for a household in the city was $70,563, and median income for a family was $76,452. Males had a median income of $46,429 versus $26,841 for females. The per capita income for the city was $26,619. 5.3% of families and 7.7% of individuals were living below the poverty line, including 8.9% of those under 18 years of age and 2.2% of those 65 years and over. Education The community is served by Sandwich Community Unit School District 430, which operates three elementary schools, an intermediate school, a junior