Marissa is located in Saint Clair County. About 1,833 people live here (as of 2020). Between 2010 and 2020, the population declined from 1,979 to 1,833. The region is at 138 meters above sea level. There are about 115 streets in Marissa. The postal codes are 62257. Marissa is human settlement in St. Clair County, Illinois, United States of America. Among other things, Marissa has restaurants and banks.
| Area | 7.9 |
| Elevation | 138 m |
| Located in | St. Clair County |
| Postal code | 62257 |
| Country | United States |
| Population | 1833 |
| Official name | Marissa |
| Bike path |
| Bike lane on roadway |
| Cycling allowed on bus lane |
| Bicycle street |
| Open to cyclists |
| Open to cyclists, good path |
| Cycling prohibited |
| Cobblestone |
| Long-distance bike route | (depending on scale) |
| Long-distance bike route |
| Long-distance hiking trail | (depending on scale) |
| Long-distance hiking trail |
| Pedestrians prohibited |