Cascade is a rural city in and the county seat of Valley County, Idaho, United States, in the west central part of the state. The population was 939 at the 2010 census, down from 997 in 2000. Cascade is located on the southeast shore of Lake Cascade, formerly known as "Cascade Reservoir." With the introduction of the Tamarack Resort in 2004, the name was officially changed to sidestep the negative marketing connotations of "reservoir." It was formed by the completion of , on the north side of the city. Construction by the Bureau of Reclamation began in 1942, was halted during World War II, and completed in 1948. Cascade was the home of a sizable Boise Cascadesawmill, which closed in May 2001. The recreational city ofMcCall is north, and the village of Donnelly is a little over midway, via Highway 55. The Tamarack Resort is across the reservoir to the northwest.
An minor earthquake here in 1977 measured 4.5 on the Richter scale and lasted over a minute; felt across the region, it was centered near Cascade and occurred in the early hours of Sunday, November 27.
As of the census of 2010, there were 939 people, 416 households, and 256 families residing in the city. The population density was. There were 847 housing units at an average density of. The racial makeup of the city was 96.5% White, 0.2% African American, 0.9% Native American, 0.2% Asian, 0.6% from other races, and 1.6% from two or more races. Hispanic or Latino of any race were 2.7% of the population. There were 416 households, of which 24.5% had children under the age of 18 living with them, 48.6% were married couplesliving together, 9.6% had a female householder with no husband present, 3.4% had a male householder with no wife present, and 38.5% were non-families. 32.0% of all households were made up of individuals, and 12.5% 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 2.77. The median age in the city was 46.4 years. 19.6% of residents were under the age of 18; 8.7% were between the ages of 18 and 24; 19.9% were from 25 to 44; 33.9% were from 45 to 64; and 18% were 65 years of age or older. The gender makeup of the city was 50.7% male and 49.3% female.
2000 census
As of the census of 2000, there were 997 people, 421 households, and 282 families residing in the city. The population density was 275.8 people per square mile. There were 562 housing units at an average density of 155.5 per square mile. The racial makeup of the city was 95.59% White, 0.10% African American, 0.40% Native American, 0.30% Asian, 0.10% Pacific Islander, 1.60% from other races, and 1.91% from two or more races. Hispanic or Latino of any race were 2.21% of the population. 22.6% were of German, 12.7% English, 11.4% Irish, 8.7% American and 5.8% French ancestry according to Census 2000. There were 421 households, out of which 30.4% had children under the age of 18 living with them, 51.1% were married couples living together, 10.2% had a female householder with no husband present, and 33.0% were non-families. 29.2% of all households were made up of individuals, and 10.5% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.83. In the city, the population was spread out, with 27.0% under the age of 18, 4.3% from 18 to 24, 25.3% from 25 to 44, 26.5% from 45 to 64, and 17.0% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 102.2 males. For every 100 females age 18 and over, there were 99.5 males. The median income for a household in the city was $32,411, and the median income for a family was $37,813. Males had a median income of $36,250 versus $20,139 for females. The per capita income for the city was $17,330. About 9.3% of families and 12.1% of the population were below the poverty line, including 20.1% of those under age 18 and 9.0% of those age 65 or over.
Climate
Cascade experiences a humid continental climate with long, cold, snowy winters and short, warm, dry summers.