O’Fallon, Illinois
O’Fallon is located in Saint Clair County 83 miles (as the crow flies) from Springfield, Illinois. It has a population of 16,073 residents and covers over 15 square kilometers of land.
O’Fallon is located in Saint Clair County 83 miles (as the crow flies) from Springfield, Illinois. It has a population of 16,073 residents and covers over 15 square kilometers of land.