Pump Back is a census-designated place (CDP) in Mayes County, Oklahoma, United States. The population was 160 at the 2020 census.
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2020 census
As of the 2020 census, Pump Back had a population of 160. The median age was 36.1 years. 27.5% of residents were under the age of 18 and 8.8% of residents were 65 years of age or older. For every 100 females there were 105.1 males, and for every 100 females age 18 and over there were 141.7 males age 18 and over.
There were 57 households in Pump Back, of which 56.1% had children under the age of 18 living in them. Of all households, 59.6% were married-couple households, 10.5% were households with a male householder and no spouse or partner present, and 14.0% were households with a female householder and no spouse or partner present. About 10.5% of all households were made up of individuals and 1.8% had someone living alone who was 65 years of age or older.
! Race !! Number !! Percent
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| White || 93 || 58.1%
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| Black or African American || 0 || 0.0%
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| American Indian and Alaska Native || 37 || 23.1%
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| Asian || 2 || 1.2%
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| Native Hawaiian and Other Pacific Islander || 0 || 0.0%
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| Some other race || 0 || 0.0%
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| Two or more races || 28 || 17.5%
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| Hispanic or Latino (of any race) || 5 || 3.1%
|}
2000 census
As of the census