Hainesville is a village in Avon Township, Lake County, Illinois, United States. As of the 2010 census, it had a population of 3,597. Hainesville has the distinction of being the oldest incorporated community within Lake County.
Hainesville is located at 42°20′56″N 88°4′7″W / 42.34889°N 88.06861°W / 42.34889; -88.06861 (42.348754, -88.068743).
According to the 2010 census, Hainesville has a total area of 1.814 square miles (4.70 km), of which 1.78 square miles (4.61 km) (or 98.13%) is land and 0.034 square miles (0.09 km) (or 1.87%) is water.
As of the census of 2000, there were 2,129 people, 701 households, and 586 families residing in the village. The population density was 1,221.2 people per square mile (472.4/km²). There were 716 housing units at an average density of 410.7 per square mile (158.9/km²). The racial makeup of the village was 86.10% White, 1.74% African American, 0.09% Native American, 5.64% Asian, 0.05% Pacific Islander, 4.60% from other races, and 1.78% from two or more races. Hispanic or Latino of any race were 9.30% of the population.
Due to the explosive growth within Lake County, a special census was requested in 2004 yielding a population totaling 3,444.
There were 701 households out of which 54.4% had children under the age of 18 living with them, 75.2% were married couples living together, 6.3% had a female householder with no husband present, and 16.4% were non-families. 11.7% of all households were made up of individuals and 1.3% had someone living alone who was 65 years of age or older. The average household size was 3.04 and the average family size was 3.33.
In the village, the population was spread out with 34.5% under the age of 18, 4.7% from 18 to 24, 48.5% from 25 to 44, 9.4% from 45 to 64, and 2.9% who were 65 years of age or older. The median age was 30 years. For every 100 females, there were 102.0 males. For every 100 females age 18 and over, there were 97.7 males.
The median income for a household in the village was $69,938, and the median income for a family was $73,828. Males had a median income of $55,353 versus $33,750 for females. The per capita income for the village was $22,250. About 2.6% of families and 3.9% of the population were below the poverty line, including 6.3% of those under age 18 and none of those age 65 or over.
As of the 2010 US Census, there were 3,597 people residing in the village. The racial makeup of the village was 72.95% White, 4.03% African American, 0.81% Native American, 11.76% Asian, 0.03% Pacific Islander, 6.89% from other races, and 3.53% from two or more races. Hispanic or Latino of any race were 16.85% of the population.