City · United States
Collinsville
Collinsville is a city located mainly in Madison County and partially in St. Clair County, Illinois, United States. As of the 2020 census, the city had a population of 24,366. Collinsville is approximately 14 miles (23 km) east of St. Louis, Missouri, and is part of that city's Metro East area.
Good to know
- Population: 24,754.
- Area: 38.5 sq km.
- Elevation: 171 m.
- Timezone: America/Chicago.