Lake LeAnn, Michigan should not be confused with Lake Ann, Michigan.
| Official Name: | Lake LeAnn, Michigan |
| Settlement Type: | Census-designated place (CDP) & unincorporated community |
| Pushpin Map: | Michigan#USA |
| Pushpin Label: | Lake LeAnn |
| Pushpin Map Caption: | Location within the state of Michigan##Location within the United States |
| Coordinates: | 42.0625°N -84.4303°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Michigan |
| Subdivision Type2: | County |
| Subdivision Name2: | Hillsdale |
| Subdivision Type3: | Township |
| Subdivision Name3: | Somerset |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 2.40 |
| Area Land Sq Mi: | 1.66 |
| Area Water Sq Mi: | 0.74 |
| Area Total Km2: | 6.22 |
| Area Land Km2: | 4.29 |
| Area Water Km2: | 1.93 |
| Population As Of: | 2020 |
| Population Density Km2: | 366.23 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1055 |
| Postal Code Type: | ZIP code(s) |
| Postal Code: | 49249 (Jerome) |
| Area Code: | 517 |
| Blank Name: | FIPS code |
| Blank Info: | 26-44752 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806330 |
| Population Total: | 1571 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 948.67 |
Lake LeAnn is an unincorporated community and census-designated place (CDP) in Hillsdale County in the U.S. state of Michigan. The CDP has a population of 1,571 at the 2020 census. It is located in Somerset Township and includes the namesake Lake LeAnn and several other lakes that are part of the Grand River headwaters.
U.S. Route 12 runs through the southern part of the community, leading east-northeast to Ypsilanti and west-southwest to Coldwater.