List of county courthouses in Washington (state)
Table:
County
Courthouse
Photo
Built
Location
Notes

Adams
Adams County Courthouse

1941
Ritzville

Asotin
Asotin County Courthouse

1938
Asotin

Benton
Benton County Courthouse

1927
Prosser

Chelan
Chelan County Courthouse

1924
Wenatchee

Clallam
Clallam County Courthouse

1914
Port Angeles

Clark
Clark County Courthouse

1940
Vancouver

Columbia
Columbia County Courthouse

1887
Dayton
It is the oldest courthouse in the Washington state

Cowlitz
Cowlitz County Courthouse

1923
Kelso

Douglas
Douglas County Courthouse

1905
Waterville

Ferry
Ferry County Courthouse

1936
Republic

Franklin
Franklin County Courthouse

1912
Pasco

Garfield
Garfield County Courthouse

1901
Pomeroy

Grant
Grant County Courthouse

1917
Ephrata

Grays Harbor
Grays Harbor County Courthous

1911
Montesano

Island
Island County Courthouse

1948
Coupeville

Jefferson
Jefferson County Courthouse

1890
Port Townsend

King
King County Courthouse

1916
Seattle

Kitsap
Kitsap County Courthouse

1932
Port Orchard

Kittitas
Kittitas County Courthouse

1955
Ellensburg

Klickitat
Klickitat County Courthouse

1941
Goldendale

Leveraging the following table and the passages listed below.

Respond to the question below: Which office approximated the 2018 headcount of the Washingtonian city which contains the Chelan County Courthouse ? Respond with the correct answer (omit explanations) in JSON format as {"answer": "YOUR ANSWER"}. Avoid adding external knowledge.

Ritzville ( /ˈrɪtsvɪl/ ) is a city in Adams County , Washington , United States . The population was 1,673 at the 2010 census . It is the county seat of Adams County . The city is part of the Othello , WA Micropolitan Area , which comprises all of Adams County , and is part of the larger Moses Lake-Othello , WA Combined Statistical Area .
Asotin /əˈsoʊtən/ is the county seat of Asotin County , Washington , United States . The population of the city was 1,251 at the 2010 census . It is part of the Lewiston , ID-WA Metropolitan Statistical Area .
Prosser ( /ˈprɑːsər/ ) is a city in and the county seat of Benton County , Washington , United States , along the Yakima River with only one zip code 99350 . The population was 5,714 at the 2010 census .
Wenatchee ( /wɛˈnætʃiː/ weh-NA-tchee ) is a city located in north-central Washington and is the largest city and county seat of Chelan County , Washington , United States . The population within the city limits in 2010 was 31,925 . In 2018 , the Office of Financial Management estimated the population at 34,329 . Located at the confluence of the Columbia and Wenatchee rivers near the eastern foothills of the Cascade Range , Wenatchee lies on the western side of the Columbia River , across from the city of East Wenatchee . The Columbia River forms the boundary between Chelan and Douglas County . Wenatchee is the principal city of the Wenatchee-East Wenatchee , Washington Metropolitan Statistical Area , which encompasses all of Chelan and Douglas counties ( total population around 110,884 ) . However , the Wenatchee Valley Area generally refers to the land between Rocky Reach and Rock Island Dam on both banks of the Columbia , which includes East Wenatchee , Rock Island , and Malaga . The city was named for the nearby Wenatchi Indian tribe . The name is a Sahaptin word that means river which comes [ or whose source is ] from canyons or robe of the rainbow . Awenatchela means people at the source [ of a river ] . The city of Wenatchee shares its name with the Wenatchee River , Lake Wenatchee and the Wenatchee National Forest . Wenatchee is referred to as the Apple Capital of the World due to the valley 's many orchards .
The Clallam County Courthouse is located at 319 Lincoln Street in Port Angeles , Washington . It was built in 1914-15 , replacing an older wood courthouse built in 1892 , and officially dedicated on June 14 , 1915 . A 1979 expansion , connected to the historic courthouse by an enclosed bridge , now houses many of the official functions , including courts , public records , and a jail . The historic courthouse now houses the Clallam County Museum and the county Parks , Fair and Facilities Department . The building was added to the National Register of Historic Places in 1987 and was added as a contributing properties to the Port Angeles Civic Historic District in 2011 .
Port Angeles /ˈændʒəliːz/ is a city in and the county seat of Clallam County , Washington , United States . With a population of 19,038 as of the 2010 census , it is the largest city in the county . The population was estimated at 20,076 in 2018 by the Office of Financial Management . The City 's harbor was dubbed Puerto de Nuestra Señora de los Ángeles ( Port of Our Lady of the Angels ) by Spanish explorer Francisco de Eliza in 1791 . By the mid-19th century , after settlement by English speakers from the United States , the name was shortened and partially anglicized to its current form , Port Angeles Harbor . Port Angeles is home to Peninsula College . It is the birthplace of football hall of famer John Elway and residents include writers and artists . The city is served by William R. Fairchild International Airport . Ferry service is provided across the Strait of Juan de Fuca to Victoria , British Columbia , Canada on the MV Coho .
Vancouver is a city on the north bank of the Columbia River in the U.S. state of Washington . It is the largest suburb of Portland , Oregon . Incorporated in 1857 , Vancouver had a population of 161,791 as of the 2010 U.S. census , making it the fourth-largest city in Washington state . Vancouver is the county seat of Clark County and forms part of the Portland-Vancouver metropolitan area , the 23rd largest metropolitan area in the United States . Originally established in 1825 around Fort Vancouver , a fur-trading outpost , the city is located on the Washington/Oregon border along the Columbia River , directly north of Portland . In 2005 , Money magazine named it No . 91 on its list of best places in America to live . In 2016 , WalletHub ranked Vancouver the 89th best place in the U.S. for families to live .
Dayton is a city in and the county seat of Columbia County , Washington , United States . The population was 2,526 at the 2010 census .
Kelso is a city in the southwestern part of the U.S. state of Washington and is the county seat of Cowlitz County . At the 2010 census , the population was 11,925 . Kelso is part of the Longview , Washington Metropolitan Statistical Area , which has a population of 102,410 . Kelso shares its long western border with Longview . It is near Mount St. Helens .
The Douglas County Courthouse is a courthouse located in Waterville , Washington , the county seat of Douglas County , Washington . The Douglas County Courthouse was constructed in 1905 to replace an earlier , wood frame building . Designed by Newton Gauntt , the brick , Victorian-style structure is a two-story building that is approximately 60 feet ( 18 m ) by 60 feet ( 18 m ) in plan . It was added to the National Register of Historic Places in 1975 .
Waterville is a town in and the county seat of Douglas County , Washington , United States which is known for its wheat industry . It is part of the Wenatchee-East Wenatchee metropolitan area . The population was 1,138 at the 2010 census .
Republic is a city in Ferry County , Washington , United States . The population was 1,073 at the 2010 census , a 12.5% increase over the 2000 Census . It is the county seat of Ferry County .
The Franklin County Courthouse in Pasco , Washington is a historic courthouse which was built in 1912-13 . It was listed on the National Register of Historic Places in 1978 . It is located at 1016 N. 4th St. in Pasco . It was designed by architects C. Lewis Wilson and Company , of Seattle , Centralia and Chehalis . Its central rotunda interior is the most arresting space . The creme colored marble coupled with azure and gold accents provide a space that is at once comfortable and elegant .
Pasco ( /ˈpæskoʊ/ PAS-koh ) is a city in , and the county seat of , Franklin County , Washington , United States . Pasco is one of three cities that make up the Tri-Cities region of the state of Washington . The Tri-Cities is a mid-sized metropolitan area of approximately 296,224 people that also includes the cities of Kennewick and Richland in a 2018 estimate . Pasco 's population was 59,781 at the 2010 census and 74,778 as of the July 1 , 2018 Census Bureau estimate .
The Garfield County Courthouse , at 8th and Main streets in Pomeroy , Washington , was built in 1901 . It is of Late Victorian architecture , designed by Charles Burggraf and built by Spokane contractor August Isle . It was identified as one of several elaborate county courthouses constructed in Washington around the turn of the century when it was listed on the National Register of Historic Places in 1974 .
Pomeroy is a city in Garfield County , Washington , United States . The population was 1,425 at the 2010 census . It is the county seat of and only city in Garfield County .
The Grant County Courthouse building is located in Ephrata , Washington and is the Administrative Center of Government for Grant County . It was listed on the National Register of Historic Places in 1975 .
Ephrata ( /iːˈfreɪtə/ ee-FRAY-tə ) is a city in Grant County , Washington , United States . The population was 7,664 at the 2010 census . It is the county seat of Grant County .
Montesano is a city in Grays Harbor County , Washington , United States . The population was 3,976 at the 2010 census . It is the county seat of Grays Harbor County .
Coupeville is a town on Whidbey Island , in Island County , Washington , United States . It is the county seat of Island County . The population was 1,831 at the 2010 census .
The Jefferson County Courthouse in Port Townsend , Washington was built in 1892 . It was listed on the National Register of Historic Places in 1973 . It was designed by architect W.A . Ritchie and is Romanesque Revival in style . It has a 143 feet ( 44 m ) tall tower .
Port Townsend /ˈtaʊnzənd/ is a city on the Quimper Peninsula in Jefferson County , Washington , United States . The population was 9,113 at the 2010 United States Census and an estimated 9,704 in 2018 . It is the county seat and only incorporated city of Jefferson County . In addition to its natural scenery at the northeast tip of the Olympic Peninsula , the city is known for the many Victorian buildings remaining from its late 19th-century heyday , numerous annual cultural events , and as a maritime center for independent boatbuilders and related industries and crafts . The Port Townsend Historic District is a U.S. National Historic Landmark District . It is also significantly drier than the surrounding region due to being in the rainshadow of the Olympic Mountains , receiving only 19 inches or 480 millimeters of rain per year .
The King County Courthouse is the administrative building housing the judicial branch of King County , Washington 's government . It is located in downtown Seattle , just north of Pioneer Square . The 1916 structure houses the King County Prosecuting Attorney , the King County Sheriff 's Office ( KCSO ) , the King County Council , the King County Law Library , King County Work and Education Release , and courtrooms for the King County Superior Court and the Seattle District Court . It is located just north of City Hall Park at 516 Third Avenue , between Dilling Way and James Street . An enclosed skybridge connects the courthouse to the King County Jail ; it is used to transfer prisoners between the courthouse and the jail . A pedestrian tunnel connects the courthouse to the King County Administration Building .
Seattle ( /siˈætəl/ ( listen ) see-AT-əl ) is a seaport city on the West Coast of the United States . It is the seat of King County , Washington . With an estimated 744,955 residents as of 2018 [ update ] , Seattle is the largest city in both the state of Washington and the Pacific Northwest region of North America . According to U.S. Census data released in 2018 , the Seattle metropolitan area 's population stands at 3.94 million , and ranks as the 15th largest in the United States . In July 2013 , it was the fastest-growing major city in the United States and remained in the top 5 in May 2015 with an annual growth rate of 2.1% . In July 2016 , Seattle was again the fastest-growing major U.S. city , with a 3.1% annual growth rate . Seattle is the northernmost large city in the United States . The city is situated on an isthmus between Puget Sound ( an inlet of the Pacific Ocean ) and Lake Washington , about 100 miles ( 160 km ) south of the Canada-United States border . A major gateway for trade with Asia , Seattle is the fourth-largest port in North America in terms of container handling as of 2015 [ update ] . The Seattle area was inhabited by Native Americans for at least 4,000 years before the first permanent European settlers . Arthur A. Denny and his group of travelers , subsequently known as the Denny Party , arrived from Illinois via Portland , Oregon , on the schooner Exact at Alki Point on November 13 , 1851 . The settlement was moved to the eastern shore of Elliott Bay and named Seattle in 1852 , in honor of Chief Si'ahl of the local Duwamish and Suquamish tribes .
Port Orchard is a city in and the county seat of Kitsap County , Washington , United States . It is located 13 miles ( 21 km ) due west of West Seattle and is connected to Seattle and Vashon Island via the Washington State Ferries run to Southworth . It is named after Port Orchard , the strait that separates Bainbridge Island from the Kitsap Peninsula . As of the 2010 census the population was 11,144 , and in 2018 the population was an estimated 14,389 .
Ellensburg is a city in and county seat of Kittitas County , Washington , United States . The population was 20,977 in a July 2018 census estimate . Located just east of the Cascade Range on Interstate 90 , Ellensburg is the most centrally located city in the state , and is the home of Central Washington University ( CWU ) . The surrounding Kittitas Valley is internationally known for the timothy hay that it produces . There are several local hay brokering and processing operations that ship to Pacific Rim countries . Downtown Ellensburg has many historic buildings , many of which were constructed in the late 19th century . This is a legacy of its bid to be the state capital , which it lost to Olympia . CWU being placed there is another product of that legacy . The state legislature selected Ellensburg as the location for the then Normal School as a consolation prize .
Goldendale is a city and county seat of Klickitat County , Washington , United States , near the Columbia River Gorge . The population within city limits was 3,760 at the 2000 census and 3,407 at the 2010 census , a 9.4% decrease . It is situated in a primarily agricultural area and is also near Goldendale Observatory State Park . The valley in which Goldendale is located offers views of the Cascade Mountains to the west and the Simcoe Hills to the north .