| City : | Altona |
| County : | Alpena County, Boulder County, Cavalier County, Shelby County, Todd County |
| State : | Colorado (CO) |
| | |
| Land Area : | 1.69 sq mi |
| Water Area : | 0.06 sq mi |
| Latitude : | 40.1225331 |
| Longitude : | -105.2960573 |
| | |
| Population (2010): | 501 |
| Population Estimate (2012) : | 512 |
| Population Density : | 297.23/sq mi |
| Housing Units (2012) : | 234 |
| Median Household Income (2012) : | $93,500 (Colorado : $58,244, USA : $53,046) |
| Median Family Income (2012) : | $93,958 (Colorado : $72,455, USA : $64,585) |
| Median House Price (2012) : | $638,400 (Colorado : $236,800, USA : $181,400) |