There was a combined $6 million of farms, ranches, and rural real estate for sale in Wahkiakum County recently on Land.com. The total size of all Wahkiakum County land for sale was around 1,000 acres. Wahkiakum County ranks 36th out of 39 counties in the Evergreen State for the total acreage of land currently advertised for sale. Among cities in Wahkiakum County with farms and ranches for sale, Cathlamet featured the most land for sale. Wahkiakum County is the 39th largest county (286 square miles) in Washington. It's located in the Southwest Washington region of the state.