| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Port Townsend | 1 | 10,793 | 10,177 | 1.08% | 1,555 | 7 | City |
Port Townsend is the largest city in Jefferson County, with a population of 10,793.
Port Townsend is the smallest city in Jefferson County, with a population of 10,793.
There is 1 city in Jefferson County, Washington.