Montgomery is a village within the Chicago Metropolitan Area of Kane and Kendall counties, Illinois. The village is a suburb/exurb of Chicago located roughly 45 miles (72 km) southwest of the city. The population was 20,262 at the 2020 census.

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.