Grays Harbor County is named for Grays Harbor a large estuarine bay in the southwest corner of the county, which was named after Captain Robert Gray who discovered the bay and entered it on May 7, 1792. Before 1915, the county was named Chehalis County.
Surrounding County Courthouses:
N – Jefferson County and Mason County
E – Mason County and Thurston County
S – Lewis County and Pacific County
Created: April 14, 1854
County Seat:
Bruceport 1854 – 1860
Montesano 1860 – present
County Courthouse – Montesano
Location: 102 West Broadway Avenue / 1st Street North
Built: 1910 – 1912
Style: Beaux Arts
Architect: Watson Vernon of Aberdeen
Contractor: Sylliaasen & Sando of Seattle.
Description: The building faces south and is a three story dark brown colored stone and concrete structure. The building is located on landscaped grounds in the center of Montesano. The south front of the building has a large high portico in the center supported by four columns rising from the second to third story with a pediment above. The east and west wings project slightly from the main building. On the centre of the roof is a large square dome with clock and domed roof. The interior has a large central rotunda and has brass rails, marble sheathing, varnished walnut and oak panels, terrazzo and ceramic tile floors, and beveled glass windows. The murals along the staircase depict scenes of science, thought art, power, justice, truth, commerce, industry, agriculture, abundance and domesticity. The two large County Superior Court courtrooms are located on the second story. During the construction of the building, the superintendent was R D Vernon. The building was damaged by an earthquake in 1999.
History: The county was created in 1854 as Chehalis County and Bruceport which was in Pacific County was selected as the county seat. The first courthouse was the residence of Isaiah and Lorinda Scamon. The county seat was moved to Montesano in 1860. The county offices used rented premises and the second courthouse, a two story frame structure was built in 1889 to 1890. The third and present courthouse was constructed in 1910 to 1911 at a cost of $193,471.In 1915, the name was changed to Grays Harbor County.
County Administration – Montesano

Location: 100 West Broadway Avenue / North Main Street
Built: 1969 – 1971
Style: Modern
Architect: Bennett Johnson Slenes & Smith
Contractor: Cawdey and Vemo Inc.
Description: The building faces south and is a three story concrete and glass structure. The building is located on landscaped grounds in the center of Montesano on the southeast side of the courthouse. The rectangular shaped building has vertical concrete beams with recessed windows. The roof line is flat.
Other Branch Courthouses

County Courthouse – Montesano
















County Superior Court courtroom





County Superior Court courtroom









County Administration – Montesano



Photos taken 2006 and 2016