|West Richland, Washington|
|Total||22.12 sq mi (57.29 km2)|
|Land||21.92 sq mi (56.77 km2)|
|Water||0.20 sq mi (0.52 km2)|
|Elevation||413 ft (126 m)|
|Density||538.8/sq mi (208.0/km2)|
|Time zone||Pacific (PST) (UTC-8)|
|Summer (DST)||PDT (UTC-7)|
|GNIS feature ID||1512794|
West Richland is a 22-square-mile (57 km2) city in Benton County, Washington, United States. The population was 11,811 at the 2010 census. The city is generally included in the Tri-Cities (for purposes of counting population, etc.), even though that technically makes four cities (along with Kennewick, Richland, and Pasco).
The original people of the region were the Chemnapum Indians (closely related to the Wanapum tribe), living near the mouth of the Yakima River. Lewis and Clark passed through the area in 1805, and an expedition of the Army Corps of Topographical Engineers headed by Robert E Johnson mapped the Yakima Valley in 1841.
In 1853, a road was authorized by Congress to pass through the Yakima valley, and passed through present-day West Richland - but settlement did not really begin until the late 1870s. The first schoolhouse was built in 1896 on the Van Horn Property just south of what is now Van Giesen Street. Benton County was created in 1905, Richland was incorporated in 1906, and the West Richland area was known as 'Lower Yakima'.
The Yellowstone Trail, a national highway stretching from Albany, New York, to Seattle, was located through the Yakima Valley in 1917 and 1918. It crossed the Fallon Bridge between Richland and West Richland and then proceeded directly west to Kiona.
During the 1940s, the city of Richland was built, run and maintained by the War Department for the duration of the Manhattan Project. A number of residents had chafed at the government's regulations, and as a result many of them had moved across the Yakima River, where it was possible to purchase land and own (rather than rent) a house.
Carl Heminger purchased some 80 acres (320,000 m2) in 1948, and laid out plans for a city. It was proposed that it be named Heminger City (presumably after himself), but in 1949 the townspeople chose the name Enterprise instead. Heminger moved a mile down the road in protest, and platted a small community there called Heminger City. This was eventually incorporated in the West Richland City limits. When the time came in 1955 to incorporate the town, it was decided to rename to West Richland, taking advantage of the already well-known status of nearby Richland.
West Richland was officially incorporated on June 17, 1955, combining the two towns of Heminger City and Enterprise.
In 2008 West Richland was the location of the speed test for the fastest production car in the world (Aero SSC TT) at over 250 mph (400 km/h).
West Richland is located at  According to the United States Census Bureau, the city has a total area of 22.12 square miles (57.29 km2), of which, 21.92 square miles (56.77 km2) is land and 0.20 square miles (0.52 km2) is water.(46.292085, -119.354417).
As of the census of 2010, there were 11,811 people, 4,145 households, and 3,253 families residing in the city. The population density was 538.8 inhabitants per square mile (208.0 /km2). There were 4,298 housing units at an average density of 196.1 per square mile (75.7 /km2). The racial makeup of the city was 90.3% White, 0.8% African American, 1.2% Native American, 1.9% Asian, 0.2% Pacific Islander, 2.4% from other races, and 3.2% from two or more races. Hispanic or Latino of any race were 7.1% of the population.
There were 4,145 households of which 43.1% had children under the age of 18 living with them, 65.7% were married couples living together, 8.7% had a female householder with no husband present, 4.1% had a male householder with no wife present, and 21.5% were non-families. 17.0% of all households were made up of individuals and 4.5% had someone living alone who was 65 years of age or older. The average household size was 2.85 and the average family size was 3.22.
The median age in the city was 35.4 years. 29.6% of residents were under the age of 18; 7% were between the ages of 18 and 24; 27.7% were from 25 to 44; 27.5% were from 45 to 64; and 8.3% were 65 years of age or older. The gender makeup of the city was 50.5% male and 49.5% female.
As of the 2000 census, there were 8,385 people, 2,937 households, and 2,305 families residing in the city. The population density was 386.1 per square mile (149.1/km ). There were 3,092 housing units at an average density of 142.4 per square mile (55.0/km ). The racial makeup of the city was 93.18% White, 0.56% African American, 0.50% Native American, 1.65% Asian, 0.02% Pacific Islander, 1.86% from other races, and 2.23% from two or more races. Hispanic or Latino of any race were 4.83% of the population.
There were 2,937 households out of which 45.9% had children under the age of 18 living with them, 66.9% were married couples living together, 7.9% had a female householder with no husband present, and 21.5% were non-families. 17.2% of all households were made up of individuals and 4.0% had someone living alone who was 65 years of age or older. The average household size was 2.85 and the average family size was 3.24.
In the city the age distribution of the population shows 32.7% under the age of 18, 6.3% from 18 to 24, 33.3% from 25 to 44, 21.7% from 45 to 64, and 6.1% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 101.5 males. For every 100 females age 18 and over, there were 99.9 males.
The median income for a household in the city was $57,750, and the median income for a family was $61,813. Males had a median income of $50,785 versus $29,595 for females. The per capita income for the city was $22,499. About 3.9% of families and 4.5% of the population were below the poverty line, including 5.5% of those under age 18 and 6.7% of those age 65 or over.
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