need for traditional lighting has decreased. The plant opened in the 1940s and has remained a staple ever since. On January 15, 2020, LSC Communications announced they would be closing their Mattoon facility. LSC Communications was Mattoon's largest employer. Their office buildings have since been purchased by the Mattoon School District to become a Regional Innovation Center. Geography According to the 2021 census gazetteer files, Mattoon has a total area of , of which (or 99.96%) is land and (or 0.04%) is water. Nearby rivers have been dammed to form Lake Paradise and Lake Mattoon south of the city. The terminal moraine of the Wisconsin Glacier is located just to the south of Mattoon. Heading south on I-57 there is an impressive vista from the top of the moraine at the south Mattoon exit. While the moraine is of Wisconsinan age (about 10,000 years before present), the land to the south is of Illinoian age (about 100,000 years before present). The small oil field to the south of the moraine is also attributed to glacial activity: The weight of the glacier to the north created cracks in the underlying bedrock. Oil collected adjacent to these cracks. Demographics Mattoon is a principal city of the Charleston–Mattoon Micropolitan Statistical Area. As of the 2020 census there were 16,870 people, 7,662 households, and 4,187 families residing in the city. The population density was . There were 8,685 housing units at an average density of . The racial makeup of the city was 89.25% White, 3.25% African American, 0.24% Native American, 0.66% Asian, 1.03% from other races, and 5.56% from two or more races. Hispanic or Latino of any race were 3.05% of the population. There were 7,662 households, out of which 45.17% had children under the age of 18 living with them, 33.18% were married couples living together, 15.56% had a female householder with no husband present, and 45.35% were non-families. 39.04% of all households were made up of individuals, and 15.99% had someone living alone who was 65 years of age or older. The average household size was 2.88 and the average family size was 2.19. The city's age distribution consisted of 21.6% under the age of 18, 9.1% from 18 to 24, 24.4% from 25 to 44, 26% from 45 to 64, and 19.1% who were 65 years of age or older. The median age was 42.2 years. For every 100