mark of how strongly newcomers identified with their places of origin, Willimantic has many churches, even several from the same denomination: for example, one Catholic church for French Canadians, another for Irish, Polish and Italian immigrants. As of the 2010 US Census, there were 17,737 people, 5,812 households, and 3,324 families residing in the CDP. The population density was . There were 6,282 housing units at an average density of . The racial makeup of the CDP was 66.0% White, 7.5% African American, 0.6% Native American, 1.9% Asian, 0.1% Pacific Islander, 20.2% from other races, and 3.8% from two or more races. Hispanic or Latino of any race were 39.8% of the population, of whom the majority are (26.4%) Puerto Rican. Of the 5,812 households, just over one third (34.2%) included children under the age of 18, 30.6% were married couples living together, 20.2% had a female householder with no spouse present, and 42.8% were non-families. About 31.0% of all households were made up of individuals, and 10.9% of households were one individual aged 65 or older. The average household size was 2.58 and the average family size was 3.21. In the CDP the population's age distribution was 21.5% under age 18, 31.0% from 18 to 24, 24.8% from 25 to 44, 19.0% from 45 to 64, and 8.6% who were 65 years of age or older. The median age was 26.5 years. For every 100 females, there were 97.3 males. For every 100 women ages 18 and over, there were 95.8 men. The median income for a household in the CDP was $37,469, and the median income for a family was $45,254. Males had a median income of $37,111 versus $33,862 for females. The per capita income for the CDP was $18,441. About 23.7% of families and 25.9% of the population were below the poverty line, including 38.4% of those under age 18 and 9.3% of those age 65 or over. The Willimantic urban cluster is an area surrounding the CDP, which has a population of 29,669 as of the 2010 census. Economy Willimantic's first factory was built in 1822 on Main Street by Charles Lee, followed by the first of the Jillson Mills in 1824. The Jillson Mills were bought in 1854 by a group of investors from Hartford, who formed the Willimantic Linen Company. In 1879, the Company built a woodworking factory to source its spools in