| Official Name: | Millersburg, Illinois |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Illinois#USA |
| Pushpin Label: | Millersburg |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Mercer |
| Subdivision Type3: | Township |
| Subdivision Name3: | Millersburg |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.77 |
| Area Land Km2: | 0.77 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.30 |
| Area Land Sq Mi: | 0.30 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 54 |
| Population Density Km2: | 70.20 |
| Population Density Sq Mi: | 181.82 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 735 |
| Coordinates: | 41.2414°N -90.8186°W |
| Postal Code Type: | ZIP Codes |
| Postal Code: | 61260 (Joy) 61231 (Aledo) |
| Area Code: | 309 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 413608 |
Millersburg is an unincorporated community and census-designated place in Millersburg Township, Mercer County, Illinois, United States.[3] As of the 2020 census, it had a population of 54.[2] Millersburg is 4.5miles northwest of Aledo.
Millersburg first appeared as a census designated place in the 2020 U.S. Census.[4]