| County : | Washington County |
| State : | Tennessee (TN) |
| Land Area : | 326.46 sq mi |
| Water Area : | 3.33 sq mi |
| Latitude : | 36.2956649 |
| Longitude : | -82.4950374 |
| Population (2010): | 122,979 |
| Population Estimate (2012) : | 122,840 |
| Population Density : | 376.70/sq mi |
| Housing Units (2012) : | 57,254 |
| Median Household Income (2012) : | $42,995 (Tennessee : $44,140, USA : $53,046) |
| Median Family Income (2012) : | $54,029 (Tennessee : $54,737, USA : $64,585) |
| Median House Price (2012) : | $145,800 (Tennessee : $138,700, USA : $181,400) |
Washington County Cities / Towns
| Fall Branch (1,291) | Gray (1,222) | Johnson City (63,152) |
| Jonesborough Town (5,051) | Oak Grove (4,425) | Spurgeon (3,957) |
| Telford (921) | Watauga City (458) |
Washington County Zip Codes
| 37601 (36,182) | 37604 (34,245) | 37614 (2,107) |
| 37615 (19,560) | 37641 (8,567) | 37650 (12,750) |
| 37656 (3,677) | 37659 (27,585) | 37663 (14,617) |
| 37681 (6,121) | 37686 (7,072) | 37690 (4,122) |
| 37694 (1,955) |