Walla Walla Washington Population 2024. As defined by the us census bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county. Walla walla county, washington has 1,270.0 square miles of land area and is the 26th largest county in washington by total area.

61,568), including age, race, sex, income, poverty, marital status, education and more. Census data for walla walla, wa metro area (pop.