| Official Name: | Port Jackson, Illinois |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Illinois#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Crawford |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 456 |
| Coordinates: | 38.8636°N -87.7783°W |
| Area Code: | 618 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 423079 |
Port Jackson is an unincorporated community in Crawford County, Illinois, United States. Port Jackson is 6miles southwest of Flat Rock.