Walla Walla County, Administrative county in southeastern Washington, United States
Walla Walla County is an administrative county in southeastern Washington featuring rivers and mountain ranges. The Columbia River and Snake River flow through varied terrain shaped by the Blue Mountains.
The county was established in 1854 during the period of western expansion across the region. Its creation reflected the growing settlement of European colonists in what had long been indigenous territory.
The name comes from the Walla Walla people who lived here for generations before settlers arrived in the region. This indigenous heritage shapes how the community understands its place and connection to the land.
The county manages road maintenance, infrastructure projects, and emergency services across the region. Visitors should prepare for changing road conditions, especially during winter weather and severe storms.
The area contains one of the smallest metropolitan areas in the United States, centered on the county seat of Walla Walla. This unusual status offers insight into settlement patterns and community size in the Pacific Northwest.
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