In 2018, Mammoth Spring, AR had a population of 919 people with a median age of 48.1 and a median household income of $32,679. Between 2017 and 2018 the population of Mammoth Spring, AR declined from 990 to 919, a -7.17% decrease and its median household income grew from $31,250 to $32,679, a 4.57% increase.
The 5 largest ethnic groups in Mammoth Spring, AR are White (Non-Hispanic) (92.9%), Two+ (Non-Hispanic) (3.92%), American Indian & Alaska Native (Non-Hispanic) (3.16%), White (Hispanic) (0%), and Black or African American (Non-Hispanic) (0%). 0% of the households in Mammoth Spring, AR speak a non-English language at home as their primary language, and 100% of the residents in Mammoth Spring, AR are U.S. citizens.
In 2018, the median property value in Mammoth Spring, AR was $63,500, and the homeownership rate was 71.3%. Most people in Mammoth Spring, AR drove alone to work, and the average commute time was 18.5 minutes. The average car ownership in Mammoth Spring, AR was 2 cars per household.