| City : | Alton |
| County : | Belknap County, Calhoun County, Huntingdon County |
| State : | New Hampshire (NH) |
| | |
| Land Area : | 0.46 sq mi |
| Water Area : | 0.03 sq mi |
| Latitude : | 43.4563976 |
| Longitude : | -71.2223380 |
| | |
| Population (2010): | 501 |
| Population Estimate (2012) : | 636 |
| Population Density : | 1,089.69/sq mi |
| Housing Units (2012) : | 270 |
| Median Household Income (2012) : | $65,443 (New Hampshire : $64,925, USA : $53,046) |
| Median Family Income (2012) : | $65,469 (New Hampshire : $79,488, USA : $64,585) |
| Median House Price (2012) : | $233,900 (New Hampshire : $245,600, USA : $181,400) |