Hillcrest is a village located in Ogle County, Illinois, United States.

[2] According to the 2010 census, Hillcrest has a total area of 3.16 square miles (8.18 km2), all land.

[3] At the 2000 census,[5] there were 1,158 people, 342 households and 297 families residing in the village.

There were 353 housing units at an average density of 634.3 per square mile (244.9/km2).

10.2% of all households were made up of individuals, and 1.5% had someone living alone who was 65 years of age or older.