1 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Port Townsend | 1 | 10,888 | 10,171 | 1.11% | 1,568 | 7 | City |
Port Townsend is the largest city in Jefferson County, with a population of 10,888.
Port Townsend is the smallest city in Jefferson County, with a population of 10,888.
There is 1 city in Jefferson County, Washington.