| Official Name: | Colusa, Illinois |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Illinois#USA |
| Pushpin Label: | Colusa |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Hancock |
| Subdivision Type3: | Township |
| Subdivision Name3: | Dallas City Township |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 650 |
| Coordinates: | 40.5708°N -91.1681°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 62329 |
| Area Code: | 217 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 406421 |
Colusa is an unincorporated community in Dallas City Township, Hancock County, Illinois, United States. Colusa is 5miles south of Dallas City. Colusa has a post office with ZIP code 62329.[1]
Nauvoo-Colusa Community Unit School District 325 operates public elementary and junior high schools serving the community.
Prior to 2008 residents attended Nauvoo-Colusa High School. Since 2008 residents have attended Warsaw Community Unit School District 316's Warsaw High School.[2]