Tygh Valley is a census-designated place (CDP) and unincorporated community in Wasco County, Oregon, United States. The population was 224 at the 2000 census.
Tygh Valley is located at 45°14′48″N 121°10′13″W / 45.24667°N 121.17028°W / 45.24667; -121.17028 (45.246747, -121.170213).
According to the United States Census Bureau, the CDP has a total area of 3.8 square miles (9.8 km), all of it land. The community is located 1,142 feet (348 m) above sea level.
As of the census of 2000, there were 224 people, 97 households, and 67 families residing in the CDP. The population density was 59.4 people per square mile (22.9/km²). There were 109 housing units at an average density of 28.9 per square mile (11.2/km²). The racial makeup of the CDP was 95.09% White, 1.34% Native American, 2.23% Asian, and 1.34% from two or more races.
There were 97 households out of which 22.7% had children under the age of 18 living with them, 54.6% were married couples living together, 10.3% had a female householder with no husband present, and 29.9% were non-families. 27.8% of all households were made up of individuals and 13.4% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.79.
In the CDP, the population was spread out with 21.4% under the age of 18, 4.0% from 18 to 24, 20.5% from 25 to 44, 31.3% from 45 to 64, and 22.8% who were 65 years of age or older. The median age was 47 years. For every 100 females, there were 107.4 males. For every 100 females age 18 and over, there were 102.3 males.
The median income for a household in the CDP was $24,167, and the median income for a family was $24,688. Males had a median income of $29,375 versus $11,750 for females. The per capita income for the CDP was $14,255. About 23.5% of families and 22.1% of the population were below the poverty line, including 50.0% of those under the age of eighteen and 4.5% of those sixty five or over.