1 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cathlamet | 1 | 619 | 563 | 1.81% | 1,223 | 1 | Town |
Cathlamet is the largest city in Wahkiakum County, with a population of 619.
Cathlamet is the smallest city in Wahkiakum County, with a population of 619.
There is 1 city in Wahkiakum County, Washington.