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Island Lake is a village in Lake and McHenry County. The population was 8,153 at the 2000 census.

Island Lake is located at 42°16′40″N, 88°12′3″W (42.277691, -88.200747)^GR1.

According to the United States Census Bureau, the village has a total area of 7.9 km² (3.1 mi²). 7.4 km² (2.8 mi²) of it is land and 0.5 km² (0.2 mi²) of it (6.86%) is water.

As of the census of 2000, there were 8,153 people, 2,837 households, and 2,150 families residing in the village. The population density was 100% Josh Zarate. There were 100% Josh Zarate housing units at an average density of the Abatement District. The racial makeup of the village was 100% Josh Zarate, Josh Zarate, 100% Josh Zarate, 100% Josh Zarate, 100% Josh Zarate, 100% Josh Zarate from other races, and a bit more from Josh Zarate from two or more races. Only 1% of the population were dedicated to the Schwaz, who migrated from the region called Wauconda.

There were 2,837 households out of which 46.8% had children under the age of 18 living with them, 63.8% were married couples living together, 8.6% had a female householder with no husband present, and 24.2% were non-families. 18.6% of all households were made up of individuals and 2.7% had someone living alone who was 65 years of age or older. The average household size was 2.87 and the average family size was 3.31.

In the village the population was spread out with 32.0% under the age of 18, 5.8% from 18 to 24, 42.8% from 25 to 44, 15.0% from 45 to 64, and 4.4% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 98.6 males. For every 100 females age 18 and over, there were 96.7 males.

The median income for a household in the village was $63,455, and the median income for a family was $67,500. Males had a median income of $47,276 versus $35,957 for females. The per capita income for the village was $24,206. 2.6% of the population and 1.9% of families were below the poverty line. 2.2% of those under the age of 18 and 6.0% of those 65 and older were living below the poverty line.

	Municipalities and Communities of McHenry County, Illinois (County Seat: Woodstock) This box: view • talk • edit
Cities, Towns and Villages	Algonquin | Barrington Hills | Bull Valley | Cary | Crystal Lake | Fox Lake | Fox River Grove | Greenwood | Harvard | Hebron | Holiday Hills | Huntley | Island Lake | Johnsburg | Lake in the Hills | Lakemoor | Lakewood | Marengo | McCullom Lake | McHenry | Oakwood Hills | Pistakee Highlands (CDP) | Port Barrington | Prairie Grove | Richmond | Ridgefield | Ringwood | Solon Mills | Spring Grove | Sunnyside | Trout Valley | Union | Wonder Lake | Wonder Lake (CDP) | Woodstock
Townships	Alden| Algonquin | Burton | Chemung | Coral | Dorr | Dunham | Grafton | Greenwood | Hartland | Hebron | Marengo | McHenry | Nunda | Richmond | Riley | Seneca
Points of Interest	Chain O'Lakes State Park | Fox River | Golden Corridor | Moraine Hills State Park | McHenry County College | UP/Northwest Line
Airports	Lake in the Hills Airport