Elgin (/ˈɛldʒɪn/ EL-jin) is a city in Cook and Kane counties in the northern part of the U.S. state of Illinois. Located roughly 35 mi (56 km) northwest of Chicago, it lies along the Fox River. As of 2017, the city had an estimated population of 112,456, making it the eighth-largest city in Illinois.
Elgin is located at 42°2′18″N 88°19′22″W / 42.03833°N 88.32278°W / 42.03833; -88.32278 (42.0384225, −88.3226510).
According to the 2010 census, Elgin has a total area of 37.704 square miles (97.65 km), of which 37.16 square miles (96.24 km) (or 98.56%) is land and 0.544 square miles (1.41 km) (or 1.44%) is water.
As of the census of 2010, there were 108,188 people, and 37,848 households. The population density was 2,911.2 people per square mile. There were 37,848 housing units at an average density of 1,306.5 per square mile (504.5/km²). The racial makeup of the city was 65.9% White, 7.4% African American, 1.40% Native American, 5.4% Asian, 16.3% from other races, and 3.6% from two or more races. Hispanic or Latino of any race were 43.6% of the population. A significant portion of Elgin’s Asian population was of Laotian origin.
There were 35,094 households out of which 38% had children under the age of 18 living with them, 52.6% were married couples living together, 13.3% had a female householder with no husband present, and 28.0% were non-families. 19.4% of all households were made up of individuals 65 years and older, and 7.1% had someone living alone who was 65 years of age or older. The average household size was 3.03 and the average family size was 3.56.
In the city, the population was spread out with 23.4% under the age of 18, 10.7% from 18 to 24, 33.6% from 25 to 44, 18.2% from 45 to 64, and 8.6% who were 65 years of age or older. The median age was 32.5 years. 50.2% of the population was female.
The median income for a household in the city was $56,337, and the median income for a family was $68,740. Males had a median income of $39,581 versus $28,488 for females. The per capita income for the city was $21,478. About 6.4% of families and 8.1% of the population were below the poverty line, including 11.6% of those under age 18 and 4.7% of those age 65 or over.