Barrington Hills is a village located about 40 miles (64 km) northwest of Chicago in the U.S. state of Illinois. Per the 2020 census, the population was 4,114. It straddles approximately 29 square miles (75 km2) over four counties, Cook, Kane, Lake, and McHenry. The Village of Barrington Hills was incorporated in 1957.

Kane County is a county in the U.S. state of Illinois. According to the 2020 census, it has a population of 516,522, making it the fifth-most populous county in Illinois. Its county seat is Geneva, and its largest city is Aurora. Kane County is one of the collar counties of the metropolitan statistical area designated "Chicago–Naperville–Elgin, IL–IN–WI" by the US census.