Chinook (Assiniboine: in ga ) is a city in and the county seat of Blaine County, Montana, United States. The population was 1,203 at the 2010 census. Points of interest are the Bear Paw Battlefield Museum located in the small town's center and the Bear Paw Battlefield, located just twenty miles south of Chinook.
Chinook is located at (48.5894, -109.2321).
According to the United States Census Bureau, the city has a total area of , all of it land.
As of the census of 2000, there were 1,386 people, 657 households, and 375 families residing in the city. The population density was 2,693.2 people per square mile (1,049.3/km ). There were 732 housing units at an average density of 1,422.4 per square mile (554.2/km ). The racial makeup of the city was 91.34% White, 0.36% African American, 6.35% "Native American", 0.07% Asian, 0.29% from other races, and 1.59% from two or more races. Hispanic or Latino of any race were 0.58% of the population.
There were 657 households out of which 26.3% had children under the age of 18 living with them, 45.4% were married couples living together, 9.9% had a female householder with no husband present, and 42.9% were non-families. 39.6% of all households were made up of individuals and 21.6% had someone living alone who was 65 years of age or older. The average household size was 2.10 and the average family size was 2.84.
In the city the population was spread out with 23.6% under the age of 18, 5.3% from 18 to 24, 24.0% from 25 to 44, 23.4% from 45 to 64, and 23.7% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 89.6 males. For every 100 females age 18 and over, there were 86.8 males.
The median income for a household in the city was $25,461, and the median income for a family was $35,577. Males had a median income of $26,667 versus $20,179 for females. The per capita income for the city was $16,038. About 12.1% of families and 17.3% of the population were below the poverty line, including 20.8% of those under age 18 and 20.1% of those age 65 or over.
Chinook experiences a semi-arid climate (K ppen BSk) with long, cold, dry winters and hot, wetter summers.
- Elliott Blackstone, sergeant of the San Francisco Police Department and longtime advocate for LGBT rights, was born here.
- Chet Blaylock, former member of the Montana State Senate, taught school here.
- U.S. Grant Sharp, Jr., former United States Navy four star admiral and Commander in Chief of the United States Pacific Fleet, was born here.
- Mike Tilleman, NFL defensive tackle, was born here.
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