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Clarkston, Washington
View of Lewiston and Clarkston from the north
View of Lewiston and Clarkston from the north
Location of Clarkston, Washington
Location of Clarkston, Washington
Country United States
State Washington
County Asotin
Named for William Clark
 • Type Mayor–council
 • Total 2.23 sq mi (5.78 km2)
 • Land 2.06 sq mi (5.32 km2)
 • Water 0.17 sq mi (0.45 km2)
807 ft (246 m)
 • Total 7,229
 • Estimate 
 • Density 3,587.06/sq mi (1,385.10/km2)
Time zone UTC-8 (Pacific (PST))
 • Summer (DST) UTC-7 (PDT)
ZIP code
Area code 509
FIPS code 53-12630
GNIS feature ID 1512093

Clarkston is a city in Asotin County, Washington, United States. It is part of the Lewiston, ID-WA metropolitan area, and is located west of Lewiston, Idaho, across the Snake River.

The population of Clarkston was 7,229 in 2010 census.

Walla Walla Community College opened a branch campus in Clarkston that serves the surrounding area.

Clarkston's ZIP code, 99403, is the highest in the contiguous United States.


Clarkston, Washington (1918)
Clarkston, 1918

Clarkston was first settled in 1862 by Robert Bracken, and was officially incorporated on August 14, 1902. Before becoming an official town, the area was called Jawbone Flats. The name Clarkston is a reference to William Clark, of the Lewis and Clark Expedition fame. Lewiston, across the Idaho state line from Clarkston, is named for Meriwether Lewis, and is the larger and older of the two cities. Neither Lewis or Clark ever visited the Clarkston side of the river.


Clarkston is in the Lewis-Clark Valley, at the confluence of the Snake and Clearwater rivers. Immediately across the Snake River from Clarkston is the city of Lewiston, Idaho.

According to the United States Census Bureau, the city has a total area of 2.09 square miles (5.41 km2), of which 2.01 square miles (5.21 km2) is land and 0.08 square miles (0.21 km2) is water.


This region experiences hot and dry summers, with average monthly temperatures in the upper 80s to lower 90s, but some days reach 100 degrees nbsp;°F. According to the Köppen Climate Classification system, Clarkston has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.


Historical population
Census Pop.
1910 1,257
1920 1,859 47.9%
1930 2,870 54.4%
1940 3,116 8.6%
1950 5,617 80.3%
1960 6,209 10.5%
1970 6,312 1.7%
1980 6,903 9.4%
1990 6,753 −2.2%
2000 7,337 8.6%
2010 7,229 −1.5%
2019 (est.) 7,375 2.0%
U.S. Decennial Census
2015 Estimate

2010 census

As of the census of 2010, there were 7,229 people, 3,226 households, and 1,744 families living in the city. The population density was 3,596.5 inhabitants per square mile (1,388.6/km2). There were 3,411 housing units at an average density of 1,697.0 per square mile (655.2/km2). The racial makeup of the city was 92.1% White, 0.7% African American, 2.1% Native American, 0.7% Asian, 0.1% Pacific Islander, 1.2% from other races, and 3.1% from two or more races. Hispanic or Latino of any race were 4.0% of the population.

There were 3,226 households, of which 28.4% had children under the age of 18 living with them, 33.1% were married couples living together, 16.0% had a female householder with no husband present, 5.0% had a male householder with no wife present, and 45.9% were non-families. 38.3% of all households were made up of individuals, and 15.2% had someone living alone who was 65 years of age or older. The average household size was 2.20 and the average family size was 2.88.

The median age in the city was 37.7 years. 22.7% of residents were under the age of 18; 10.1% were between the ages of 18 and 24; 25.1% were from 25 to 44; 25.2% were from 45 to 64; and 16.9% were 65 years of age or older. The gender makeup of the city was 47.4% male and 52.6% female.


The Port Of Clarkston is home to one of the largest cranes on a navigable waterway east of Portland. Agriculture is a major industry in the area and the port handles a lot of barge traffic carrying grains. The paper company Clearwater Paper Corporation transports wood chips and sawdust via barges for use at a Lewiston manufacturing plant. Due to its inland location on the Snake River, the port handles goods headed out to Portland-Vancouver, and inland to distributors upstream.

The port's marina has accommodations for personal boats and yachts, many of which travel through the nearby Hells Canyon.


There are four public elementary schools in Clarkston: Parkway Elementary School, Grantham Elementary School, Heights Elementary School, and Highland Elementary School.

Clarkston also has one 4 year high-school teaching grade 9-12, Charles Francis Adams High School. The school has a population of 800-850 students, with over 100 staff members. It has a library, a football field, a performing arts stage, and a tennis court.

Clarkston is also home to Holy Family Catholic School, a Kindergarten through 8th grade school established in 1921. The school provides traditional Catholic education and has a current enrollment of 148 students. Holy Family also provides pre-K 3 and Pre-K 4 preschool and afterschool enrichment classes.

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