| Place Name | Square Lake |
| Place Type | Unincorporated Territory |
| County | Aroostook County |
| Area Code(s) | 207 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 480 |
| Majority Ethnicity | White 98.76% |
| US Congressional District(s) | Maine 2nd |
| State House Districts | 150 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.76% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.24% |