Per the US Census, the estimated population (2007) in Washington County is 10,147.  Washington County's county seat is the town of Weiser.  Weiser is the home of the world-famous National Old-Time Fiddler's Contest in the summer.

Due to the travel requirements to cover all of Washington County, Metro Appraisals provides appraisal services in Washington County on a per-quote basis.

Washington County includes the following towns:

• Weiser (county seat, pop. 5,222)
• Midvale
• Cambridge