| Official Name: | Twin Grove, Illinois |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Illinois#USA |
| Pushpin Label: | Twin Grove |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | McLean |
| Subdivision Type3: | Townships |
| Subdivision Name3: | Dale, Dry Grove |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 10.29 |
| Area Land Km2: | 10.27 |
| Area Water Km2: | 0.02 |
| Area Total Sq Mi: | 3.97 |
| Area Land Sq Mi: | 3.96 |
| Area Water Sq Mi: | 0.01 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 1524 |
| Population Density Km2: | 148.46 |
| Population Density Sq Mi: | 384.46 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 817 |
| Coordinates: | 40.4933°N -89.0797°W |
| Postal Code Type: | ZIP Code |
| Postal Code: | 61705 (Bloomington) |
| Area Code: | 309 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 423261 |
| Blank1 Name: | FIPS code |
| Blank1 Info: | 17-76511 |
Twin Grove is an unincorporated community and census-designated place (CDP) in McLean County, Illinois, United States. As of the 2020 census, Twin Grove had a population of 1,524.[2]
Twin Grove is in western McLean County on both sides of Illinois Route 9. It is 5miles west of Bloomington, the county seat.
According to the U.S. Census Bureau, the Twin Grove CDP has an area of 3.97sqmi, of which 0.01sqmi, or 0.25%, are water.[1] Kings Mill Creek flows southward through the western part of the community, leading to the Middle Fork of Sugar Creek, part of the Sangamon River watershed flowing west to the Illinois River.