| Place Name | St. John |
| Place Type | Plantation |
| ZIP Code(s) | 04739 04743 04774 |
| County | Aroostook County |
| Area Code(s) | 207 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 215 |
| Majority Ethnicity | White 84.19% |
| US Congressional District(s) | Maine 2nd |
| State House Districts | 151 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 84.19% |
| African American | 0% |
| Hispanic | 14.88% |
| Asian | 0.93% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |