Newman is a city in Douglas County, Illinois, United States. The population was 778 at the 2020 census. According to the 2010 census, Newma…Newman is a city in Douglas County, Illinois, United States. The population was 778 at the 2020 census. According to the 2010 census, Newman has a total area of 0.63 square miles, all land. As of the 2020 census there were 778 people, 364 households, and 240 families residing in the city. The population density was 1,269.17 inhabitants per square mile. There were 387 housing units at an average density of 631.32 per square mile. The racial makeup of the city was 93.44% White, 0.77% African American, 0.26% Native American, 0.51% Asian, 0.51% from other races, and 4.50% from two or more races. Hispanic or Latino of any race were 2.57% of the population.