Some from Washington State
Spokane County Courthouse (Spokane). Built in 1891 One of my favs!
King County Courthouse (Seattle). Built in the 1910s and enlarged in the 1920's.
Pacific County Courthouse. Built in 1909 (South Bend, Washington)
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Columbia County Courthouse (Dayton, Washington) - County Population is about 4,100. Washington State's oldest Courthouse still in use.
Jefferson County Courthouse (Port Townsend, Washington) Built in 1891
Garfield County Courthouse (Pomeroy, Washington) Built in 1901 and is Washington's least populated county (about 2,800)