Blackfoot Idaho stands as an oasis in the desert with many attractions, and facilities for its citizens, and visitors. First named Grove City because of the abundance of trees. Blackfoot may be a desert oasis but it lies on the south western edge of the Greater Yellowstone eco-system which provides Blackfoot with unlimited scenic and recreational opportunities. the mighty Snake River flows through town.

As of the 2000 census, there were 10,419 people, 3,685 households, and 2,682 families residing in the city. The population density was 1,926.4 people per square mile (743.6/km²). There were 3,929 housing units at an average density of 726.4/sq mi (280.4/km²). The racial makeup of the city was 86.76% White, 0.21% African American, 2.51% Native American, 1.09% Asian, 0.03% Pacific Islander, 6.33% from other races, and 3.06% from two or more races. Hispanic or Latino of any race were 13.17% of the population.

There were 3,685 households out of which 38.8% had children under the age of 18 living with them, 56.9% were married couples living together, 11.8% had a female householder with no husband present, and 27.2% were non-families. 23.7% of all households were made up of individuals and 10.7% had someone living alone who was 65 years of age or older. The average household size was 2.75 and the average family size was 3.27.
In the city the population was spread out with 31.2% under the age of 18, 10.9% from 18 to 24, 25.5% from 25 to 44, 18.9% from 45 to 64, and 13.4% who were 65 years of age or older. The median age was 31 years.

For every 100 females there were 96.5 males. For every 100 females age 18 and over, there were 91.3 males.
The median income for a household in the city was $33,004, and the median income for a family was $36,553. Males had a median income of $31,489 versus $20,625 for females. The per capita income for the city was $15,529. About 11.5% of families and 14.6% of the population were below the poverty line, including 22.4% of those under age 18 and 5.7% of those age 65 or over.