In 2023, Fairfield, MT had a population of 746 people with a median age of 31.3 and a median household income of $66,544. Between 2022 and 2023 the population of Fairfield, MT declined from 759 to 746, a −1.71% decrease and its median household income grew from $64,922 to $66,544, a 2.5% increase.
The 5 largest ethnic groups in Fairfield, MT are White (Non-Hispanic) (94.9%), Two+ (Non-Hispanic) (2.95%), Black or African American (Non-Hispanic) (2.14%), White (Hispanic) (0%), and Black or African American (Hispanic) (0%).
None of the households in Fairfield, MT reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
100% of the residents in Fairfield, MT are U.S. citizens.
Most people in Fairfield, MT drove alone to work, and the average commute time was 21.8 minutes. The average car ownership in Fairfield, MT was 2 cars per household.