Pump Back is a census-designated place (CDP) in Mayes County, Oklahoma, United States.

As of the census[3] of 2000, there were 155 people, 64 households, and 49 families residing in the CDP.

The population density was 73.9 inhabitants per square mile (28.5/km2).

There were 93 housing units at an average density of 44.4 per square mile (17.1/km2).

Males had a median income of $36,429 versus $19,625 for females.