Montgomery is a village in Kane and Kendall County, Illinois. The population was 5,471 at the 2000 census, and was 14,407 in a 2006 special census. The 2010 census lists Montgomery's population at 18,438, which is a 237 percent increase from 2000.
Montgomery is located at 41°43′40″N 88°19′45″W / 41.72778°N 88.32917°W / 41.72778; -88.32917 (41.727879, -88.329033).
According to the United States Census Bureau, the village has a total area of 6.6 square miles (17.1 km²), of which, 6.4 square miles (16.6 km²) of it is land and 0.2 square miles (0.5 km²) of it (3.03%) is water. However, this information is based on 2000 census data. Several annexations of surrounding land since 2000 have brought the current area to approximately 9.3 square miles (24 km2).