| Place Name | Gardiner |
| Place Type | City |
| ZIP Code(s) | 04345 |
| County | Kennebec County |
| Area Code(s) | 207 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 5,816 |
| Population Growth Rate (2010-19) | 2.78% |
| Majority Ethnicity | White 97.53% |
| Metro/Micro Stats Area | Augusta-Waterville, ME |
| US Congressional District(s) | Maine 2nd |
| State House Districts | 83 |
| State Senate Districts | 14 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.53% |
| African American | 0.27% |
| Hispanic | 0.27% |
| Asian | 0.14% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.79% |