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| County : | Jefferson County |
| State : | Washington (WA) |
| Land Area : | 1,803.69 sq mi |
| Water Area : | 379.44 sq mi |
| Latitude : | 47.8026411 |
| Longitude : | -123.5218104 |
| Population (2010): | 29,872 |
| Population Estimate (2012) : | 29,802 |
| Population Density : | 16.56/sq mi |
| Housing Units (2012) : | 17,767 |
| Median Household Income (2012) : | $46,870 (Washington : $59,374, USA : $53,046) |
| Median Family Income (2012) : | $61,929 (Washington : $71,939, USA : $64,585) |
| Median House Price (2012) : | $293,400 (Washington : $272,900, USA : $181,400) |
Jefferson County Cities / Towns
| Brinnon (797) | Marrowstone (844) | Port Hadlock-irondale (3,580) |
| Port Ludlow (2,603) | Port Townsend City (9,113) | Queets (174) |
| Quilcene (596) |
Jefferson County Zip Codes
| 98320 (1,250) | 98325 (1,848) | 98331 (6,261) |
| 98339 (3,326) | 98358 (897) | 98365 (4,528) |
| 98368 (14,724) | 98376 (1,998) | 98382 (26,856) |