| County : | Petersburg Census Area |
| State : | Alaska (AK) |
| Land Area : | 3,281.96 sq mi |
| Water Area : | 2,402.07 sq mi |
| Latitude : | 56.6396123 |
| Longitude : | -133.5279958 |
| Population (2010): | 3,815 |
| Population Estimate (2012) : | 3,822 |
| Population Density : | 1.16/sq mi |
| Housing Units (2012) : | 1,994 |
| Median Household Income (2012) : | $61,696 (Alaska : $69,917, USA : $53,046) |
| Median Family Income (2012) : | $79,932 (Alaska : $81,752, USA : $64,585) |
| Median House Price (2012) : | $206,000 (Alaska : $237,900, USA : $181,400) |
Petersburg Census Area Cities / Towns
| Kake City (557) | Kupreanof City (27) | Petersburg City (2,948) |
| Port Alexander City (52) |
Petersburg Census Area Zip Codes
| 99830 (561) | 99833 (3,202) | 99836 (52) |