Carpentersville is a village in Kane County, Illinois, United States. The population was 37,691 at the 2010 census.
Carpentersville is located at 42°7′16″N 88°16′29″W (42.121156, -88.274679).
According to the 2010 census, Carpentersville has a total area of 8.097 square miles (20.97 km2), of which 7.9 square miles (20.46 km2) (or 97.57%) is land and 0.197 square miles (0.51 km2) (or 2.43%) is water.
Julius Angelo Carpenter (August 19, 1827 – March 30, 1880) was the founder of Carpentersville, Illinois and its first prominent citizen. Carpenter came with his family from Uxbridge, Massachusetts and settled near the Fox River, along with his father Charles Valentine Carpenter and his uncle Daniel. Angelo was the first person to settle Carpentersville. Carpenter built the settlement's first store, bridge, and factory. He served two consecutive terms in the Illinois House of Representatives. In 1837, the brothers, en route to the Rock River, made camp along the east bank of the Fox River to wait out the spring floods that made continuing their oxcart journey impossible. They ended up staying in the area to settle what was then called Carpenters' Grove.
For the next hundred years, Carpentersville did not grow as rapidly as other Fox River communities which had more direct rail connections to Chicago.