| Official Name: | Hamlet, Illinois |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Illinois#USA |
| Pushpin Label: | Hamlet |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Mercer |
| Subdivision Type3: | Township |
| Subdivision Name3: | Perryton |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.15 |
| Area Land Km2: | 1.15 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.45 |
| Area Land Sq Mi: | 0.45 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 21 |
| Population Density Km2: | 18.19 |
| Population Density Sq Mi: | 47.09 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 807 |
| Coordinates: | 41.3139°N -90.7353°W |
| Postal Code Type: | ZIP Code |
| Postal Code: | 61279 (Reynolds) |
| Area Code: | 309 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 409704 |
Hamlet is an unincorporated community and census-designated place in Perryton Township, Mercer County, Illinois, United States.[3] As of the 2020 census, it had a population of 21.[2] Hamlet is located on Illinois Route 94, 3.5miles west-southwest of Reynolds.