| Place Name | Alton |
| Place Type | Census Designated Place |
| ZIP Code(s) | 03809 |
| County | Belknap County |
| Area Code(s) | 603 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 636 |
| Population Growth Rate (2010-19) | -0.40% |
| Majority Ethnicity | White 65.35% |
| Metro/Micro Stats Area | Laconia, NH |
| US Congressional District(s) | New Hampshire 1st |
| State House Districts | Belknap 5 |
| State Senate Districts | 6 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 65.35% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 34.65% |