| Official Name: | Blairsville, 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: | Williamson |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.62 |
| Area Land Km2: | 2.61 |
| Area Water Km2: | 0.01 |
| Area Total Sq Mi: | 1.01 |
| Area Land Sq Mi: | 1.01 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 243 |
| Population Density Km2: | 92.95 |
| Population Density Sq Mi: | 240.83 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 400 |
| Coordinates: | 37.8111°N -89.1236°W |
| Postal Code Type: | ZIP Code |
| Postal Code: | 62918 |
| Area Code: | 618 |
| Blank Name: | FIPS code |
| Blank Info: | 17-06444 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806456 |
Blairsville is an census designated place in Williamson County, Illinois, United States. The community is located along County Route 9 southeast of Hurst and north of Cambria.[2]
Blairsville first appeared as a census designated place in the 2020 U.S. Census.[3]